If you created your Persistent Storage with Tails 5.12 or earlier, we recommend you create your new backup Tails on a different USB stick and destroy your old backup Tails (or at least [[securely delete the entire device|doc/encryption_and_privacy/secure_deletion#device]]).
If you don't, the previous LUKS1 data might still be written in some recovery data on the USB stick and could be recovered using advanced data forensics techniques.
If you created your encrypted volume with Tails 5.12 or earlier and are worried about a very powerful adversary, consider migrating your entire Tails to a different USB stick and destroying your old TailsUSB stick (or at least [[securely deleting the entire device|doc/encryption_and_privacy/secure_deletion#device]]).
