Config backup may not compatible with TrueNAS 12

[basilhendroff]

An attempt to restore a config created with this script fails under TrueNAS 12. Saving and reloading a config through the UI works. For details, please refer to this TrueNAS forum post https://www.truenas.com/community/threads/pool-restoration-journey-truenas-12.93581/post-647700