[NicholasT]

Thanks for your reply, Mike.  

That worked.

This makes me wonder what copy does and what happens when I have a master (first import) and then make multiple copies and edit the copies.

Are all the copies pointing to the same pdf on file and copies have their metadata records in the DB?

I typically add different annotations to different copies and that's about as far as their uniqueness goes.  But, are there some behaviors (like rearranging/deleting pages from a copy) that will affect the original master?

Cheers,
Nicholas