I abhor the frame generator. It's not my prefered way of designing a frame to hold my parts together (counter intuative).
I place CC frame parts in the asm and eventualy demote them into a frame asm file. In this procces i often place multiple copies of a member.
This catches me out sometimes as i make holes in a member (bolted connection).
to resolve this i make a copy of the part and then replace other members with the copy, or replace the one with it's copy. and remove the unwanted hole features in the members that should not have them.
I find the whole copy-replace tiresome. Sometimes you have to redo the constrants as well.
Cloning the selected member, giving it a new file name, and have the member replaced by the cloned version, keeping the contraints, is all i need.
Much like the new frame generator replacing a copied member with a unique member.