Following on from http://forums.infragistics.com/forums/p/3550/18864.aspx#19703

If I change the cell value of a row that is being used in a grouped sort, and manually call RefreshSortPosition on the row, I am finding that the row position will sometimes change (depending on other sorts on the grid), but it does not move to the correct group.

I can verify it using this code:

    ' Update row with new data

    grdRow.RefreshSortPosition()

    ' Check to see if we should have moved group
    If grdRow.ParentRow IsNot Nothing Then
        If grdRow.ParentRow.IsGroupByRow Then
            ' Get the correct value from the row, for the relevant column
            If CStr(grdRow.Cells(CType(grdRow.ParentRow, UltraGridGroupByRow).Column).Value) <> Cstr(CType(grdRow.ParentRow, UltraGridGroupByRow).Value) Then                                                
                Debug.WriteLine("Row hasn't been moved to the correct group!!!")                                                    
            End If
        End If
    End If

Can anyone think of a reason this would happen?