I use Feature.SetBody2(..) to replace dump solids with associativity intact.  It works fine when I import from many formats like Parasolid (*.x_t).  They come into SolidWorks as a BaseBody. Unfortunately, it doesn’t work for STEP file imports.  If I translate all my STEP files to x_t files before I use them, then everything works fine, but I cannot work directly from STEP files. 

So, my question: If I