Dangerous thing to do. Unless you are finding the hexadecimal name from the SQL tables to find your files in the Archive I'd be very careful in what you do. I would recommend that you first identify if the parts are "interchangeable" find the one to keep. Look for all references that use the others. Make the changes to those assy to look at the one you want to keep. Check-in the changes. Verify that document where-used coms up empty and then delete the others "versions" and don't forget to purge after deleting to ensure the database records get cleaned up!