Cloning/Moving webpart pages with existing webparts

Hi All,       

        We need to support clone/move of the webpart pages with pre populated webparts. We have our custom webpart page layout. Users can create webpart page using our custom page layout and can add webparts init. On cloning of the webpart page we just read the file(webpart page) from the document libary and saving it with different name in the same document library. But the cloned page does not retain the webparts added to it. The user can view only the empty webpart page layout.

Please suggest me how to move/clone the webpart page with the existing webparts.

Thanks,

R.Prakash