Hi Sam,

Should I expect this sample to crash? If no, what I need to change in order to reproduce the crash?Using build 11.2.20112.2125 it works fine.

Plamen.

Item is already added to the collection!
   at Infragistics.Olap.AreaItemsCollection.OnCollectionChanging(NotifyCollectionChangedEventArgs e)
   at Infragistics.Olap.SwapCollection`1.InsertItemInternal(Int32 index, T item, Boolean suppressMessages)
   at Infragistics.Olap.SwapCollection`1.InsertItem(Int32 index, T item)
   at System.Collections.ObjectModel.Collection`1.Add(T item)
   at PivotGridTest.FlatDataExample.PeopleGrid_Loaded(Object sender, RoutedEventArgs e) in \\Visual Studio 2010\Projects\PivotGridTest2\PivotGridTest\FlatDataExample.xaml.cs:line 123

            // Bug in Infragistics version 11.1 - sort expressions do not work. - see the following thread.
            // http://community.infragistics.com/forums/p/65104/329867.aspx#329867

            //System.Linq.Expressions.Expression<Func<TBARollPivotItem, string>> sortCusip = x => new Random().Next().ToString();
            //System.Linq.Expressions.Expression<Func<TBARollPivotItem, string>> sortBroker = x => x.Position.BROKER;
            //source.HierarchyDescriptors[6].LevelDescriptors[1].OrderByKeyExpression = sortCusip;
            //source.HierarchyDescriptors[6].LevelDescriptors[2].OrderByKeyExpression = sortBroker;
            //source.HierarchyDescriptors[6].LevelDescriptors[1].OrderByKeyExpression = sortCusip;
            //source.HierarchyDescriptors[7].LevelDescriptors[1].OrderByKeyExpression = sortBroker;

            RollGrid.DataSource.Filters.Add(RollGrid.DataSource.CreateFilterViewModel(
                RollGrid.DataSource.Cube.Dimensions["PM_NAME"].Hierarchies.First()));
            FilterPM();

            RollGrid.DataSource.Filters.Add(RollGrid.DataSource.CreateFilterViewModel(
                RollGrid.DataSource.Cube.Dimensions["DELIVERY_DT"].Hierarchies.First()));
            FilterDelivery();

            RollGrid.DataSource.Filters.Add(RollGrid.DataSource.CreateFilterViewModel(
                RollGrid.DataSource.Cube.Dimensions["TURN_IND"].Hierarchies.First()));
            FilterTurn();

            RollGrid.DataSource.Filters.Add(RollGrid.DataSource.CreateFilterViewModel(
                RollGrid.DataSource.Cube.Dimensions["ROLL_IND"].Hierarchies.First()));
            FilterRoll();

            /* populate combo boxes with distinct values from filter */
            ViewModel.DeliveryDates = new List<string> { "All", "All Failing" }.Union(
                from p in ViewModel.RollBook
                orderby p.Position.DELIVERY_DT
                select p.DELIVERY_DT).Distinct().ToList();

            /* set default book */
            FilterBook();

            /* set default view */
            FilterView();

            //ViewModel.PropertyChanged += ViewModelPropertyChanged;

            RollBookLoaded = true;
        }

        private void ViewModelPropertyChanged(object sender, PropertyChangedEventArgs e)
        {
            if (e.PropertyName == "RollBook")
            {
                Dispatcher.BeginInvoke(new Action(delegate()
                {
                    LoadRollBook();
                }));
            }
        }

        private void OnResultChanged(object sender, AsyncCompletedEventArgs e)
        {
            FlatDataSource fds = (FlatDataSource)RollGrid.DataSource;
            List<TBARollPosition> ResultPositions = new List<TBARollPosition>();

            List<int> indices = fds.GetCellItemsIndexes(
                fds.Result.Cells[fds.Result.Cells.GetUpperBound(0), fds.Result.Cells.GetUpperBound(1)]);
            foreach (int index in indices)
            {
                ResultPositions.Add(((TBARollPivotItem)fds.GetRecord(index)).Position);
            }

            ViewModel.ResultPositions = new ObservableCollection<TBARollPosition>(ResultPositions);
        }

        private void OnLoaded(object sender, RoutedEventArgs e)
        {
            if (!RollBookLoaded)
            {
                LoadRollBook();

                /* hide some filters of the XamPivotGrid which are set in code */
                RollGrid.MeasuresDropControl.Visibility = Visibility.Collapsed;
                RollGrid.ColumnsDropControl.Visibility = Visibility.Collapsed;
                RollGrid.FiltersDropControl.Visibility = Visibility.Collapsed;

                /* default filter Options = All */
                ViewModel.SelectedPMs = "All";
                ViewModel.SelectedDelivery = "All";

                /* for convenience set Delivery Date to nearest pool day */
                ViewModel.SelectedDelivery = String.Format("{0:MM/dd/yyyy}", ViewModel.DeliveryDates
                .Where(x => !x.Contains("All") && Convert.ToDateTime(x) > DateTime.Now.Date && Common.Utilities.GetBusinessDays(DateTime.Now, Convert.ToDateTime(x)) > 2)
                .Min(x => Convert.ToDateTime(x)));
            }
        }

        private IFilterViewModel GetFilterViewModel(FlatDataSource source, string caption)
        {
            foreach (var filter in source.Filters)
            {
                if (filter.Caption == caption)
                {
                    return (IFilterViewModel)filter;
                }
            }

            foreach (var row in source.Rows)
            {
                if (row.Caption == caption)
                {
                    return (IFilterViewModel)row;
                }
            }

            foreach (var column in source.Columns)
            {
                if (column.Caption == caption)
                {
                    return (IFilterViewModel)column;
                }
            }

            return null;
        }

        private void ExpandHierarchy(IFilterMember filter, bool value)
        {
            _mre = new ManualResetEvent(false);

            if (filter.IsExpanded != value)
            {
                filter.IsExpanded = value;
            }

            if (filter.FilterMembers == null)
            {
                _mre.WaitOne();
            }

            foreach (var child in filter.FilterMembers)
            {
                ExpandHierarchy(child, value);
            }
        }

        private void SetFilter(IFilterMember filter, string value, bool set)
        {
            _mre = new ManualResetEvent(false);

            if (filter.Caption == value)
            {
                filter.IsSelected = set;
            }
           
            /* expand the filter if closed */
            if (!filter.IsExpanded)
            {
                filter.IsExpanded = true;
                _mre.WaitOne();
            }

            foreach (var child in filter.FilterMembers)
            {
                SetFilter(child, value, set);
            }
        }

        private void OnPMChanged(object sender, SelectionChangedEventArgs e)
        {
            //ViewModel.SelectedPMs = PMFilter.SelectedItems.Cast<PortfolioManager>().ToList();
            FilterPM();
            RollGrid.DataSource.RefreshGrid();
        }

        private void OnDeliveryChanged(object sender, SelectionChangedEventArgs e)
        {
            FilterDelivery();
            RollGrid.DataSource.RefreshGrid();
        }

        private void FilterPM()
        {
            //if (ViewModel.SelectedPMs.Count > 0)
            //{
            //    FilterOption(kFilterPM, "All", false);
            //    foreach (var pm in ViewModel.SelectedPMs)
            //    {
            //        FilterOption(kFilterPM, pm.Name);
            //    }
            //}
            //else
            //{
            //    FilterOption(kFilterPM, "All");
            //}

            if (ViewModel.SelectedPMs != null)
            {
                FilterOption(kFilterPM, "All", false);
                foreach (var pm in ViewModel.SelectedPMs.Split('\\'))
                {
                    FilterOption(kFilterPM, pm);
                }
            }
        }

        private void FilterDelivery()
        {
            FilterOption(kFilterDelivery, "All", false);
            if (ViewModel.SelectedDelivery == "All Failing")
            {
                ViewModel.IsNetFails = false;
                NetFails.IsEnabled = false;
                foreach (var date in ViewModel.DeliveryDates)
                {
                    if (!date.Contains("All") && Convert.ToDateTime(date) < DateTime.Today)
                    {
                        FilterOption(kFilterDelivery, date);
                    }
                }
            }
            else
            {
                NetFails.IsEnabled = true;
                FilterOption(kFilterDelivery, ViewModel.SelectedDelivery);
            }
        }

        private void FilterOption(string tag, string value, bool set=true)
        {
            IFilterViewModel fvm = GetFilterViewModel(
                (FlatDataSource)RollGrid.DataSource, tag);

            fvm.LoadFilterMembersCompleted +=
                (s, e) => _mre.Set();

            if (fvm.FilterMembers != null)
            {
                foreach (var filter in fvm.FilterMembers)
                {
                    SetFilter(filter, value, set);
                }
            }

            fvm.CommitChanges();
        }

        private void OnBookChanged(object sender, RoutedEventArgs e)
        {
            FilterBook();
            RollGrid.DataSource.RefreshGrid();
        }

        private void FilterBook()
        {
            IFilterViewModel fvm = GetFilterViewModel(
                (FlatDataSource)RollGrid.DataSource, kMeasure);

            foreach (var filter in fvm.FilterMembers)
            {
                if (filter.Caption == kBookLast)
                {
                    filter.IsSelected = ViewModel.IsLastRoll;
                }

                if (filter.Caption == kBookLive)
                {
                    filter.IsSelected = ViewModel.IsLiveRoll;
                }

                if (filter.Caption == kBookMust)
                {
                    filter.IsSelected = ViewModel.IsMustRoll;
                }
            }

            fvm.CommitChanges();
        }

        private void OnViewChanged(object sender, RoutedEventArgs e)
        {
            FilterView();
        }

        private void FilterView()
        {
            RollGrid.DataSource.DeferredLayoutUpdate = true;

            FlatDataSource source = (FlatDataSource)RollGrid.DataSource;
            IFilterViewModel product = GetFilterViewModel(source, kViewProduct);
            product.LoadFilterMembersCompleted += (s, e) => _mre.Set();
            foreach (IFilterMember member in product.FilterMembers)
            {
                ExpandHierarchy(member, true);
            }

            IFilterViewModel broker = GetFilterViewModel(source, kViewBroker);
            broker.LoadFilterMembersCompleted += (s, e) => _mre.Set();
            foreach (IFilterMember member in broker.FilterMembers)
            {
                ExpandHierarchy(member, ViewModel.IsBrokerView);
            }

            RollGrid.DataSource.ResultChanged += HierarchyChanged;
            RollGrid.DataSource.DeferredLayoutUpdate = false;

            RollGrid.Visibility = ViewModel.IsAccountView ? Visibility.Collapsed : Visibility.Visible;
            AccountGrid.Visibility = ViewModel.IsAccountView ? Visibility.Visible : Visibility.Collapsed;
        }

        private void HierarchyChanged(object sender, AsyncCompletedEventArgs e)
        {
            DataSourceBase dataSourceBase = (DataSourceBase)sender;
            dataSourceBase.ResultChanged -= HierarchyChanged;

            dataSourceBase.HierarchyExpansionMode = HierarchyExpansionMode.DrillDown;
            dataSourceBase.UpdateVisualMembers(Infragistics.Olap.ExecutionContext.Rows);
            dataSourceBase.UpdateVisualMembers(Infragistics.Olap.ExecutionContext.Columns);
            dataSourceBase.HierarchyExpansionMode = HierarchyExpansionMode.SingleLevelOnly;

            dataSourceBase.RefreshGrid();
        }

        private void OnRollChanged(object sender, RoutedEventArgs e)
        {
            FilterRoll();
            RollGrid.DataSource.RefreshGrid();
        }

        private void FilterRoll()
        {
            IFilterViewModel fvm = GetFilterViewModel(
                (FlatDataSource)RollGrid.DataSource, kFilterRoll);
           
            foreach (var filter in fvm.FilterMembers)
            {
                if (filter.Caption == "N")
                {
                    filter.IsSelected = ViewModel.IsRollAll;
                }
            }

            fvm.CommitChanges();
        }

        private void OnTurnChanged(object sender, RoutedEventArgs e)
        {
            FilterTurn();
            RollGrid.DataSource.RefreshGrid();
        }

        private void FilterTurn()
        {
            IFilterViewModel fvm = GetFilterViewModel(
                (FlatDataSource)RollGrid.DataSource, kFilterTurn);

            foreach (var filter in fvm.FilterMembers)
            {
                if (filter.Caption == "Y")
                {
                    filter.IsSelected = ViewModel.IsTurnYes;
                }

                if (filter.Caption == "N")
                {
                    filter.IsSelected = ViewModel.IsTurnNo;
                }
            }

            fvm.CommitChanges();
        }

        private void OnFailsChanged(object sender, RoutedEventArgs e)
        {
            ViewModel.BuildRollBook();
            LoadRollBook();
        }

        private void OnDrillDown(object sender, PivotCellClickedEventArgs e)
        {
            ViewModel.RollDrillDown.Clear();

            ICell cell = (ICell)RollGrid.ActiveCell.Data;
            if (cell != null)
            {
                FlatDataSource fds = (FlatDataSource)RollGrid.DataSource;
                List<int> indices = fds.GetCellItemsIndexes(cell);

                foreach (int index in indices)
                {
                    TBARollPivotItem item = (TBARollPivotItem)fds.GetRecord(index);
                    if (item.Net != 0)
                    {
                        ViewModel.RollDrillDown.Add(item);
                    }
                }
            }

            ViewModel.TBADrillDown = RollGrid.ActiveCell.DataRow.Tuple.Members[0].Name
                + " (" + RollGrid.ActiveCell.DataColumn.Tuple.Members[0].Name + ")";

            TBARollDrillDown window = new TBARollDrillDown(ViewModel);
            window.Owner = Application.Current.MainWindow;
            window.WindowStartupLocation = WindowStartupLocation.CenterOwner;
            window.ShowDialog();
        }

        private void OnRefresh(object sender, RoutedEventArgs e)
        {
            ViewModel.Refresh();
            LoadRollBook();
        }

        private void ExcelButton_Click(object sender, RoutedEventArgs e)
        {
            string filePath = "";

            if (ViewModel.IsAccountView)
            {
                filePath = Common.Utilities.GetUniqueFileName(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "TBARollBookAccounts.xlsx"));
                Common.Utilities.ExportGridAsync(AccountGrid, filePath);
            }
            else
            {
                if(ViewModel.IsBrokerView)
                    filePath = Common.Utilities.GetUniqueFileName(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "TBARollBookBrokers.xls"));
                else
                    filePath = Common.Utilities.GetUniqueFileName(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), "TBARollBookProducts.xls"));

                Common.PivotGridExporter exporter = new Common.PivotGridExporter();
                exporter.ExportToExcel(RollGrid, filePath, true, true);
            }
        }

        public void OnSaveLayout(AppLayout layout)
        {
            layout.TBARollBookLayout = AccountGrid.SaveCustomizations();
        }

        public void OnRestoreLayout(AppLayout layout)
        {
            if (!string.IsNullOrWhiteSpace(layout.TBARollBookLayout))
                AccountGrid.LoadCustomizations(layout.TBARollBookLayout);
               
        }

        private void OnCellRightClicked(object sender, Behaviors.CellRightClickedEventArgs e)
        {
            // Cell will be null if it is a row or column header cell.
            PivotCell cell = null;

            if (e.Cell != null)
            {
                cell = (PivotCell)e.Cell.Cell;

                if(RollGrid.ActiveCell != null)
                    RollGrid.ActiveCell.IsSelected = false;
               
                RollGrid.ActiveCell = cell;
                RollGrid.ActiveCell.IsSelected = true;
            }
            ViewModel.MouseOverCell = cell;
        }
    }
}

<UserControl x:Class="Poolman.Views.TBARollBook"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:igPivot="http://schemas.infragistics.com/xaml"
             xmlns:igFlatData="http://schemas.infragistics.com/olap"
             xmlns:igDP="http://infragistics.com/DataPresenter"
             xmlns:igExt="clr-namespace:PIMCO.Infra.Extensions;assembly=PIMCO.Infragistics.Extensions"
             xmlns:local="clr-namespace:Poolman.Views"
             xmlns:ig="http://schemas.infragistics.com/xaml"
             xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
             xmlns:Behaviors="clr-namespace:Poolman.Behaviors"
             xmlns:localControls="clr-namespace:Poolman.Controls">
    <UserControl.Resources>
        <Style x:Key="ShortStyle" TargetType="{x:Type igPivot:PivotCellControl}"
               BasedOn="{StaticResource PivotCellStyle}">
            <Style.Triggers>
                <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Path=Cell.Data.Value,
                    Converter={StaticResource IsNegative}}" Value="True">
                    <Setter Property="Foreground" Value="Red"/>
                </DataTrigger>
            </Style.Triggers>
            <Setter Property="HorizontalContentAlignment" Value="Right"/>
            <Setter Property="FontFamily" Value="Calibri"/>
            <Setter Property="FontSize" Value="13"/>
        </Style>
        <Style x:Key="TotalRowCellStyle" TargetType="{x:Type igPivot:PivotCellControl}"
               BasedOn="{StaticResource ShortStyle}">
            <Setter Property="Background" Value="#444444"/>
            <Setter Property="FontFamily" Value="Calibri"/>
            <Setter Property="FontSize" Value="13"/>
        </Style>
        <Style x:Key="CellStyle" TargetType="igPivot:PivotCellControl" BasedOn="{StaticResource ShortStyle}">
            <Setter Property="Background" Value="#222222"/>
        </Style>
        <Style x:Key="TotalCellStyle" TargetType="igPivot:PivotCellControl" BasedOn="{StaticResource TotalRowCellStyle}">
            <Setter Property="Background">
            <Setter.Value>
                    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                        <GradientStop Color="#B2D6D6D6" Offset="1"/>
                        <GradientStop Color="#B2E7E7E7" Offset="0"/>
                    </LinearGradientBrush>
                </Setter.Value>
            </Setter>
        </Style>
        <igFlatData:FlatDataSource x:Key="RollBookDataSource" x:Shared="False"
                                   Rows="[PIMCO_DESC].[Product],[BROKER].[Broker]"
                                   Columns="[Measure].[Measure]"
                                   Measures="Long,Short,Net">
            <igFlatData:FlatDataSource.ConnectionSettings>
                <igFlatData:FlatDataConnectionSettings ItemsSource="{Binding}"/>
            </igFlatData:FlatDataSource.ConnectionSettings>
            <igFlatData:FlatDataSource.CubesSettings>
                <igFlatData:CubeMetadata DataTypeFullName="Poolman.Models.TBARollPivotItem">
                    <igFlatData:DimensionMetadata SourcePropertyName="Long"
                                                  DisplayFormat="{}{0:#,#;(#,#)}"/>
                    <igFlatData:DimensionMetadata SourcePropertyName="Short"
                                                  DisplayFormat="{}{0:#,#;(#,#)}"/>
                    <igFlatData:DimensionMetadata SourcePropertyName="Net"
                                                  DisplayFormat="{}{0:#,#;(#,#)}"/>
                </igFlatData:CubeMetadata>
            </igFlatData:FlatDataSource.CubesSettings>
            <igFlatData:FlatDataSource.HierarchyDescriptors>
                <igFlatData:HierarchyDescriptor SourcePropertyName="{x:Static local:TBARollBook.kMeasure}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="Type"
                                                             LevelExpressionPath="Measure.Type"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
                <igFlatData:HierarchyDescriptor SourcePropertyName="PM_NAME"
                                                HierarchyName="{x:Static local:TBARollBook.kFilterPM}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="All"/>
                        <igFlatData:HierarchyLevelDescriptor LevelName="PM"
                                                             LevelExpressionPath="PM_NAME"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
                <igFlatData:HierarchyDescriptor SourcePropertyName="DELIVERY_DT"
                                                HierarchyName="{x:Static local:TBARollBook.kFilterDelivery}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="All"/>
                        <igFlatData:HierarchyLevelDescriptor LevelName="Delivery"
                                                             LevelExpressionPath="DELIVERY_DT"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
                <igFlatData:HierarchyDescriptor SourcePropertyName="ROLL_IND"
                                                HierarchyName="{x:Static local:TBARollBook.kFilterRoll}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="Roll"
                                                             LevelExpressionPath="ROLL_IND"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
                <igFlatData:HierarchyDescriptor SourcePropertyName="TURN_IND"
                                                HierarchyName="{x:Static local:TBARollBook.kFilterTurn}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="Turn"
                                                             LevelExpressionPath="TURN_IND"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
                <igFlatData:HierarchyDescriptor SourcePropertyName="PIMCO_DESC"
                                                HierarchyName="{x:Static local:TBARollBook.kViewProduct}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="All"/>
                        <igFlatData:HierarchyLevelDescriptor LevelName="Product"
                                                             LevelExpressionPath="PIMCO_DESC"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
                <igFlatData:HierarchyDescriptor SourcePropertyName="BROKER"
                                                HierarchyName="{x:Static local:TBARollBook.kViewBroker}">
                    <igFlatData:HierarchyDescriptor.LevelDescriptors>
                        <igFlatData:HierarchyLevelDescriptor LevelName="All"/>
                        <igFlatData:HierarchyLevelDescriptor LevelName="Broker"
                                                             LevelExpressionPath="BROKER"/>
                    </igFlatData:HierarchyDescriptor.LevelDescriptors>
                </igFlatData:HierarchyDescriptor>
            </igFlatData:FlatDataSource.HierarchyDescriptors>
        </igFlatData:FlatDataSource>
    </UserControl.Resources>
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <localControls:Toolbar/>
        <StackPanel Grid.Row="0" Orientation="Horizontal">
            <StackPanel.Resources>
                <Style TargetType="{x:Type GroupBox}">
                    <Setter Property="Margin" Value="2"/>
                </Style>
            </StackPanel.Resources>
            <GroupBox Header="Options" Foreground="White"
                      Template="{DynamicResource MainGroupBoxControlTemplate}">
                <StackPanel Orientation="Horizontal">
                    <Grid>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto"/>
                            <RowDefinition Height="Auto"/>
                        </Grid.RowDefinitions>
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition Width="Auto"/>
                        </Grid.ColumnDefinitions>
                        <Grid.Resources>
                            <Style TargetType="{x:Type ComboBox}">
                                <Setter Property="Width" Value="150"/>
                                <Setter Property="Margin" Value="4"/>
                                <Setter Property="VerticalAlignment" Value="Center"/>
                            </Style>
                            <Style TargetType="{x:Type TextBlock}" BasedOn="{StaticResource {x:Type TextBlock}}">
                                <Setter Property="VerticalAlignment" Value="Center"/>
                                <Setter Property="Margin" Value="4"/>
                            </Style>
                        </Grid.Resources>
                        <TextBlock Text="Delivery Date" Grid.Row="0" Grid.Column="0"/>
                        <ComboBox Grid.Row="0" Grid.Column="1"
                                  ItemsSource="{Binding DeliveryDates}"
                                  SelectionChanged="OnDeliveryChanged"
                                  SelectedItem="{Binding SelectedDelivery}"/>
                        <TextBlock Text="Portfolio Manager" Grid.Row="1" Grid.Column="0" Width="100"/>
                        <ComboBox Grid.Row="1" Grid.Column="1"
                                  ItemsSource="{Binding PortfolioManagers}"
                                  SelectionChanged="OnPMChanged"
                                  SelectedItem="{Binding SelectedPMs}"/>
                        <!--<ig:XamMultiColumnComboEditor Name="PMFilter" Grid.Row="1" Grid.Column="1"
                                                      ItemsSource="{Binding PortfolioManagers}"
                                                      EmptyText="All"
                                                      DisplayMemberPath="Name"
                                                      AllowDropDownResizing="True"
                                                      AllowMultipleSelection="True"
                                                      CheckBoxVisibility="Visible"
                                                      SelectedItemsResetButtonVisibility="Visible"
                                                      SelectionChanged="OnPMChanged"
                                                      Margin="4" Width="150">
                            <ig:XamMultiColumnComboEditor.Columns>
                                <ig:TextComboColumn Key="Name" HeaderText="PM"/>
                            </ig:XamMultiColumnComboEditor.Columns>
                        </ig:XamMultiColumnComboEditor>-->
                        <CheckBox IsChecked="{Binding IsRollAll}"
                                  Content="Include Do Not Roll"
                                  Click="OnRollChanged"
                                  Style="{StaticResource PoolmanCB}"
                                  Grid.Row="1" Grid.Column="2"/>
                        <CheckBox Name="NetFails"
                                  IsChecked="{Binding IsNetFails}"
                                  Content="Include Failing Positions"
                                  Click="OnFailsChanged"
                                  Style="{StaticResource PoolmanCB}"
                                  Grid.Row="0" Grid.Column="2"/>
                    </Grid>
                </StackPanel>
            </GroupBox>
            <GroupBox Header="Book" Foreground="White"
                      Template="{DynamicResource MainGroupBoxControlTemplate}">
                <StackPanel>
                    <CheckBox IsChecked="{Binding IsLastRoll}"
                              Content="{x:Static local:TBARollBook.kBookLast}"
                              Click="OnBookChanged"
                              Style="{StaticResource PoolmanCB}"
                              IsEnabled="False"/>
                    <CheckBox IsChecked="{Binding IsLiveRoll}"
                              Content="{x:Static local:TBARollBook.kBookLive}"
                              Click="OnBookChanged"
                              Style="{StaticResource PoolmanCB}"/>
                    <CheckBox IsChecked="{Binding IsMustRoll}"
                              Content="{x:Static local:TBARollBook.kBookMust}"
                              Click="OnBookChanged"
                              Style="{StaticResource PoolmanCB}"/>
                </StackPanel>
            </GroupBox>
            <GroupBox Header="View" Foreground="White"
                      Template="{DynamicResource MainGroupBoxControlTemplate}">
                <StackPanel>
                    <StackPanel.Resources>
                        <Style TargetType="{x:Type RadioButton}">
                            <Setter Property="Margin" Value="4"/>
                            <Setter Property="Foreground" Value="White"/>
                        </Style>
                    </StackPanel.Resources>
                    <RadioButton IsChecked="{Binding IsProductView}"
                                 GroupName="View"
                                 Content="Product"
                                 Tag="{x:Static local:TBARollBook.kViewProduct}"
                                 Click="OnViewChanged"/>
                    <RadioButton IsChecked="{Binding IsBrokerView}"
                                 GroupName="View"
                                 Content="Broker"
                                 Tag="{x:Static local:TBARollBook.kViewBroker}"
                                 Click="OnViewChanged"/>
                    <RadioButton IsChecked="{Binding IsAccountView}"
                                 GroupName="View"
                                 Content="Account"
                                 Tag="{x:Static local:TBARollBook.kViewAccount}"
                                 Click="OnViewChanged"/>
                </StackPanel>
            </GroupBox>
            <GroupBox Header="Turn" Foreground="White"
                      Template="{DynamicResource MainGroupBoxControlTemplate}">
                <StackPanel>
                    <CheckBox IsChecked="{Binding IsTurnYes}"
                              Content="Yes"
                              Click="OnTurnChanged"
                              Style="{StaticResource PoolmanCB}"/>
                    <CheckBox IsChecked="{Binding IsTurnNo}"
                              Content="No"
                              Click="OnTurnChanged"
                              Style="{StaticResource PoolmanCB}"/>
                </StackPanel>
            </GroupBox>
            <StackPanel Orientation="Horizontal">
                <StackPanel.Resources>
                    <Style TargetType="{x:Type Button}" BasedOn="{StaticResource ChromelessButton}">
                        <Setter Property="VerticalAlignment" Value="Bottom"/>
                        <Setter Property="Margin" Value="4"/>
                        <Setter Property="Foreground" Value="White"/>
                        <Setter Property="Width" Value="46"/>
                    </Style>
                </StackPanel.Resources>
                <Button Click="OnRefresh">
                    <StackPanel>
                        <Image Source="..\Images\refresh.ico" Style="{DynamicResource SmallImage}"/>
                        <TextBlock Text="Refresh" Style="{DynamicResource ChromelessButtonLabel}"/>
                    </StackPanel>
                </Button>
                <Button Click="ExcelButton_Click">
                    <StackPanel>
                        <Image Source="..\Images\excel.png" Style="{DynamicResource SmallImage}"/>
                        <TextBlock Text="Excel" Style="{DynamicResource ChromelessButtonLabel}"/>
                    </StackPanel>
                </Button>
            </StackPanel>
        </StackPanel>
        <igPivot:XamPivotGrid Name="RollGrid"
                              Grid.Row="1"
                              Visibility="Visible"
                              AllowCompactLayout="True"
                              Loaded="OnLoaded"
                              CellDoubleClicked="OnDrillDown"
                              TotalRowStyle="{StaticResource TotalRowCellStyle}"
                              CellStyle="{StaticResource ShortStyle}"
                              DataSource="{StaticResource RollBookDataSource}"
                              BorderBrush="{x:Null}"
                              BorderThickness="0">
            <i:Interaction.Behaviors>
                <Behaviors:PivotCellColorBehavior ItemsSource="{Binding BrokerColors}" ForegroundColor="White"/>
                    <Behaviors:PivotGridAutoWidthBehavior/>
                    <Behaviors:SectionShaderBehavior ColumnName="Live" CellStyle="{StaticResource CellStyle}"
                                                     TotalCellStyle="{StaticResource TotalCellStyle}"/>
                <Behaviors:PivotGridMouseOverCellBehavior ClickRightClicked="OnCellRightClicked"/>
            </i:Interaction.Behaviors>
            <igPivot:XamPivotGrid.SelectionSettings>
                <igPivot:PivotSelectionSettings RowSelection="None"
                                                ColumnSelection="None"/>
            </igPivot:XamPivotGrid.SelectionSettings>
            <igPivot:XamPivotGrid.ContextMenu>
                <ContextMenu>
                    <MenuItem Header="Send to Execution"
                              Command="{Binding ContextMenuCommand}">
                        <MenuItem.Icon>
                            <Image Width="16" Height="16" Source="../Images/upload.ico"/>
                        </MenuItem.Icon>
                    </MenuItem>
                </ContextMenu>
            </igPivot:XamPivotGrid.ContextMenu>
        </igPivot:XamPivotGrid>
        <igDP:XamDataGrid Name="AccountGrid"
                          Grid.Row="1"
                          Visibility="Collapsed"
                          DataSource="{Binding ResultPositions}"
                          GroupByAreaLocation="None"
                          AutoFit="False">
            <igDP:XamDataGrid.FieldSettings>
                <igDP:FieldSettings AllowEdit="False"
                                    AllowRecordFiltering="True"
                                    FilterLabelIconDropDownType="MultiSelectExcelStyle"
                                    SummaryDisplayArea="BottomFixed"
                                    CellClickAction="SelectRecord"/>
            </igDP:XamDataGrid.FieldSettings>
            <igDP:XamDataGrid.FieldLayoutSettings>
                <igDP:FieldLayoutSettings
                    AutoFitMode="ExtendLastField"
                    AllowDelete="False"
                    AllowAddNew="False"
                    AllowFieldMoving="WithinLogicalRow"
                    AutoGenerateFields="False"
                    HighlightAlternateRecords="True"
                    RecordSelectorLocation="None"
                    FilterUIType="LabelIcons"/>
            </igDP:XamDataGrid.FieldLayoutSettings>
            <igDP:XamDataGrid.FieldLayouts>
                <igDP:FieldLayout>
                    <igDP:FieldLayout.SortedFields>
                        <igDP:FieldSortDescription
                            Direction="Ascending"
                            FieldName="ACCT_NO"/>
                    </igDP:FieldLayout.SortedFields>
                    <igDP:FieldLayout.Fields>
                        <igDP:Field Name="DELIVERY_DT" Label="Delivery"/>
                        <igDP:Field Name="ACCT_NO" Label="Account">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource PoolmanDecimalStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="PM_NAME" Label="PM"/>
                        <igDP:Field Name="PIMCO_DESC" Label="Security"/>
                        <igDP:Field Name="BROKER" Label="Broker">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings CellValuePresenterStyle="{StaticResource BrokerCell}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="LONG_QTY" Label="Long">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="SHORT_QTY" Label="Short">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="Net">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="LIVE_LONG_QTY" Label="Long (Live)">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="LIVE_SHORT_QTY" Label="Short (Live)">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="LiveNet" Label="Net (Live)">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="MUST_ROLL_LONG_QTY" Label="Long (Must Roll)">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="MUST_ROLL_SHORT_QTY" Label="Short (Must Roll)">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="MustRollNet" Label="Net (Must Roll)">
                            <igDP:Field.Settings>
                                <igDP:FieldSettings EditorStyle="{StaticResource AmountStyle}"/>
                            </igDP:Field.Settings>
                        </igDP:Field>
                        <igDP:Field Name="ROLL_IND" Label="Roll"/>
                        <igDP:Field Name="TURN_IND" Label="Turn"/>
                        <igDP:Field Name="TKD_IND" Label="TKD"/>
                    </igDP:FieldLayout.Fields>
                    <igDP:FieldLayout.SummaryDefinitions>
                        <igDP:SummaryDefinition SourceFieldName="LONG_QTY"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="SHORT_QTY"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="Net"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="LIVE_LONG_QTY"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="LIVE_SHORT_QTY"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="LiveNet"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="MUST_ROLL_LONG_QTY"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="MUST_ROLL_SHORT_QTY"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                        <igDP:SummaryDefinition SourceFieldName="MustRollNet"
                                                Calculator="Sum"
                                                StringFormat="{}{0:#,#;(#,#)}"/>
                    </igDP:FieldLayout.SummaryDefinitions>
                </igDP:FieldLayout>
            </igDP:XamDataGrid.FieldLayouts>
        </igDP:XamDataGrid>
    </Grid>
</UserControl>

I'm not sure about the reason but if you post the working one I can look at it so we can find the difference. Also I've noticed that I have no email notification about  the last post I wrote at this thread yesterday and I guess you haven't such notification too. There I've put some code that has fixed ExpandDimensions() and some improvements about filtering as well.

Regards.
Plamen.