Thanks John.
This is what I was looking for. Given a directory with "a bagillion" part files in it and I only need a few hundred isolated for my assembly, copy and paste as provided by the team from Redmond Washington does not quite cut it. I will try this UG option and see how it works. I did not intend my posting to turn into a UG bashing session, just used Pro and Solidworks as an example of what I needed to do. Is there any thought in the UG development world to make this easier to do such as from the UG GUI (File-Save Assembly As) or something to that effect?