This is just a big, what if…
First try this method - Moving your recordings to a new Tablo official method to move your drive to your new tablo.
When your new tablo has all the metadata settings from your previous device – then try the process of migrating to a different drive, by which ever method.
I’ve done it a long time ago, but forgot just what works best, but that’s subjective and relative. Someone has since wrote a backup/restore 3rd party app - Backup-tablo.sh - Backup all recorded shows from a Tablo - which may come in handy as well.
As there’s no official method, I’m only guessing/suggesting and you’ll have to think for yourself. (I image the support necessary for this process would overload the system)