Unable to hide individual components in stp file

I am using eDraw version 32.1.0.0076 2024sp1.  I receive stp files of assemblies from others and use eDraw to rotate them, take sections, and isolate particular components by hiding others.  I recently received a stp file but am not able to hide individual components.  Neither myself nor the person who sent me the stp file can understand why I am not able to hide.  When I typed in the title of this post, I was given a suggestion to save the assembly with the "Save Bodies" option, but I don't have the Save Bodies option.  Any help would be greatly appreciated.