By default if you open a TS 2.0 sequence, and you attempt to save it, it will ask you to backup the older version. There is an option to determine whether this prompt appears. TestStand 3.0 has a feature to save 3.0 sequences in 2.0 format, but as with any product that has file versions it is best to only use this save as previous version when you accidentally overlay a copy of a sequence that should have been backed up.
Scott Richardson
Scott Richardson
https://testeract.com