This was easily the most awkward upgrade for me so far (XA2).
There are several things I’d do before upgrading:
Normal backup
‘dd’ backup
App grid backup
Update FakeStore
Update Okboard
First and last are normal. ‘dd’ is a major hassle but worth it if in doubt. App grid seems to be a thing for this update and was needed for me (XA2). FakeStore needed if you use it.
If there are problems that can’t be resolved, try fresh installation. If that doesn’t work, you have the ‘dd’ backup (make sure it doesn’t max out your SD card, failing to finish properly).
PS. I still have minor new problems with Bluetooth, haven’t tried zypper/pkcon refresh yet. Worth it for improved security models (inc Android) regardless.