My problem is after the 2nd query a user has to click twice on previously expanded rows to get them to expand there child rows. 

I am using LINQ to SQL.  I am binding at runtime.  I also need to set the two following lines in my initializelayout.

            e.Layout.LoadStyle = LoadStyle.LoadOnDemand;

            e.Layout.Override.ExpansionIndicator = ShowExpansionIndicator.Always;

1A) User clicks to rereieve all of the rows.

1B) user sees + indicator and clicks it.  --> It exapnds and properly shows its children.

2A) (After 1B)  User clicks to retrieve all of the rows.

2B) The original row shows up as - indicator, but without any children.  User clicks it and the indicator changes to plus.

2C)  user sees + indicator and clicks it.  --> It exapnds and properly shows its children.