Copy selected object

Hello!

I have STEP file. I use C++ and MFC samples.( I try to modify Import/Export sample). I want to save selected objects and the paste in different coordinates (after the click button PASTE)

I can select some objects and then I want to copy them. How can I do it?

I found how to copy TopoDS_Shape with 

BRepBuilderAPI_Copy A;

A.Perform(aShape);

TopoDS_Shape ShapeCopy;

ShapeCopy = A.Shape();

But if I am not mistake, when I select parts of my step file then  I select AISInteractive_Objects. not shapes.