Timothy -

Query FIlespace won't give you an indication of completeness, for your 
determination of which instances are unuseful.  Best to use Query OCCupancy in 
conjunction with success indications in the Activity Log.  Be prepared for an 
arduously long DELete FIlespace for those you dispose of, with much Recovery 
Log space being consumed.  For thoroughness, you could try an EXPort Node 
Preview=Yes on the destination server, to correlate what it has with what you 
sent.

   Richard Sims