I'm having an issue with the child ribbon tabs not showing up correctly when a second and/or third child is loaded onto the parent form

I'm on Windows 7, with VS2010 and Infragistics 10.1

The parent form is set to "IsMDIContainer" = true, and each child is set to false

The UltraToolBar MDIMergable=true and Office2007UICompatility= true.

I have the following code in the frmMain:

    Protected Overrides Sub OnMdiChildActivate(ByVal e As System.EventArgs)
          MyBase.OnMdiChildActivate(e)
          Dim activeChildManager As UltraToolbarsManager = Me.UltraToolbarsManager_Main.ActiveMdiChildManager
          '.......................................
          If Not activeChildManager Is Nothing Then
               Dim childTab As RibbonTab = activeChildManager.Ribbon.Tabs(0)
               Dim parentTab As RibbonTab = childTab.AttachedParentTab
               If Not parentTab Is Nothing Then
                    Me.UltraToolbarsManager_Main.Ribbon.SelectedTab = parentTab
                    
               Else
                    '.......................
               End If
          Else
               '............................
          End If
          '---------------------
     End Sub

But everytime a child is loaded the parent ribbon only displays the first childs ribbon even though the user selects different children.

Thanks ahead of time.

Patrick