I started researching this and found a few relevant threads:
Sounds like the job is to use SSH to copy the files from the ix volumes to a host path, or maybe zfs rename if you’re more adventurous.
Also sounds like it’s possible to edit the YAML config files of the current apps to verify that everything still works (and keep things working of the host path until you’re ready to upgrade).
I’m on holiday so won’t be able test this for a while, but I wanted to see what are the options.
