You’ll need to upgrade from version 8.1 to 10, activating 8.1 first on your new rig to restore the 10 version, which should be possible if you already completed the free upgrade.
You’ll need to upgrade from version 8.1 to 10, activating 8.1 first on your new rig to restore the 10 version, which should be possible if you already completed the free upgrade.