EmailXtender/Document Management System

Just took the Xtender implementation training class, but forgot to ask: how does Xtender work with a DMS? If a user drags an e-mail from Outlook into a DMS, would Xtender do anything to archive or index that, or would it be an extra copy separate from Xtender? I'm guessing it would be an extra copy, but just wanted to be sure.

Thanks,
Jason