Thanks for the suggestions, I haven't joined the test machine to our domain so I don't run the risk of running the v6 database tuner on our v5.029 database before we're ready to migrate.
I'll copy the entire backup to a flash drive and see if I can restore it to the v6 install. The only concern is whether it will restore without the database tuner being run on that 5.029 data...I'll update this thread in case anyone else is trying something similar with v6.
