Archiving wires

Looking for a way to somehow lock archive screens for development purposes. I have a project that is constantly getting new iterations and I am archiving wires in an archive file and renaming them with a date. The issue is that i am using masters on these files and as the project progresses those masters get updated, and that also includes the archive which i want locked and time stamped. I know i could could remove the masters but i already have dozens of screens and that would require time we just dont have. Any suggestions for better archiving?