OK I tried to create a simple WPF project to try and figure this out. When the RibbonWindow is closing I save the persistence file and on RibbonWindow Initialized I load the persistence file. This is remembering if the ContentPane is Pinned or not Pinned but if I dock it on the right side and close and reopen it does not remember the last docked location and its docked on the left at start up. So far I can only get the IsPinned property to persist correctly. Can anyone offer any advice as to how I can get it to remember the dock location? I have tried to persist the DockManager and the RibbonWindow (which is why these objects are named in the XAML) but when the app loads the DockManager is blank and I can not see the ContentPane. So far persisting the cpMapContents ContentPane is all that seems to work (a little).

I have the following XAML and C# code-behind.

<igRibbon:XamRibbonWindow .... x:Name="ribbonWindow">

  <igRibbon:RibbonWindowContentHost>
 
    <igRibbon:RibbonWindowContentHost.Ribbon>  

      <igRibbon:XamRibbon x:Name="ribbon" DockPanel.Dock="Top" ApplicationMenuMode="Office2010">

        <igRibbon:RibbonTabItem Header="Home">

        </igRibbon:RibbonTabItem>

      </igRibbon:XamRibbon>

    </igRibbon:RibbonWindowContentHost.Ribbon>  

    <igRibbon:RibbonWindowContentHost.Content>

      <igDock:XamDockManager x:Name="dockManager">

        <igDock:XamDockManager.Panes>
 
          <igDock:SplitPanes SplitterOrientation="Horizontal" igDock:XamDockManager.InitialLocation"DockedLeft" Width="300">

            <igDock:TabGroupPane>

              <igDock:ContentPane x:Name="cpMapContents" Header="Map Contents" AllowInDocumentHost="False" IsPnned="True" SerializationId="cpMapContents" />

            </igDock:TabGroupPane>

          </igDock:SplitPanes>

        </igDock:XamDockManager.Panes>

      </igDock:XamDockManager>

    </igRibbon:RibbonWindowContentHost.Content>

  </igRibbon:RibbonWindowContentHost>

</igRibbon:XamRibbonWindow>

----------------------------

public partial class MainWindow : XamRibbonWindow {

  public MainWindow(){
    InitializeComponent();
  }

  private const string _fileName = @"C:\temp\data.txt";

  private void XamRibbonWindow_Closing(object sender, System.ComponentModel.CancelEventArgs e) {
    using (MemoryStream memoryStream = PersistenceManager.Save(cpMapContents)) {
      using (FileStream fileStream = new FileStream(_fileName, FileMode.Create, FileAccess.Write)) {
        memoryStream.WriteTo(fileStream);
      }
    }
  }

  private void XamRibbonWindow_Initialized(object sender, EventArgs e) {
    If (File.Exists(_fileName)) {
      using (FileStream fileStream = new FileStream(_fileName, FileMode.Open)) {
        PersistenceManager.Load(cpMapContents, fileStream);
      }
    }
  }

}