Retreiving the Docking pane status

Hi,
     I am having Docking panes in my application. Now I want my application to remember the status of the docking panes(which one is active, it's co-ordinates etc) when i close the session, and retrieve the status back, when a new session launches. While searching, i came across a XTPDockingPaneLayout class.

In my Mainframe.cpp I do :

m_paneManager.AttachPane(pwndPane2 , pwndPane1);
m_paneManager.AttachPane(pwndPane3 , pwndPane1);
m_paneManager.AttachPane(pwndPane7 , pwndPane1);

// Load the previous state for docking panes.
CXTPDockingPaneLayout layoutNormal(&m_paneManager);
// I do call the Load function
BOOL is_layout_loaded = layoutNormal.Load(_T("NormalLayout"));
// this returns success.

But i don't get the status of the docking panes right.
I do 

CMainFrame::~CMainFrame()
{
// Saving the layout when the application is terminating ... Atul.V 29th July 2009
CXTPDockingPaneLayout layoutNormal(&m_paneManager);
layoutNormal.Save(_T("NormalLayout"));
}

Am i missing anything ?
I am using XTP 13.0.0.

Thanks in Advance,
Atul