Someone from the dev team should take a look at this and enable a migration tutorial because I bet there are many others like me with the same Issue.
Right now I'm struggling with my TrueNAS (i have my shares set, but I cannot find the time to update it and I have some other stuff that are giving me errors and even using chatGPT or Claude to help me, I am struggling to normalize it's core functions.
The key to success is make this process as frictionless as possible for the user. I'll try to migrate mine next week.
Thank you @d3rby for sharing your experience.