Foot print not visible in Plant layout design

Hello,

In plant layout design, I can create a foot print and save it.

When i try to open the same layout the foot print is not visible.

When I open the part in product explorer I can see the foot print representation.

From product explorer, If I open the file in plant layout design, Foot print representation is not showing in tree structure.

again I need to go back to product explorer and opening the foot print, it open the foot print and it now show in the main file which was not showing earlier. Strange

Could any one suggest what needs to be done to view it at first time