I frequently get duplicate copies of photos during ingest. They would be in the form XXX-1234 and XXX-1234A. It doesn't always happen and sometimes, not even all of the photos being ingested have duplicates. I am using 4.6.4 beta5 on a MacBook Pro with OS X 10.6.3, but I have had this problem on earlier versions of both Photo Mechanic and OS X. I am typically saving to one external hard drive and my laptop drive. Sometimes I save only to two external drives. In either case, the problem sometimes occurs. Is there something I might be doing wrong, or have others experienced this issue?