2.0 - 2.5
Restores must be done at the same version level. If this is attempted the restore will fail with the following error:
Error: "Cannot restore to a backup with a version different than the current appliance version. (60347)."
2.6 and above
An Appliance administrator can restore backups as far back as Safeguard for Privileged Passwords version 18.104.22.16858.