Finished the upgrade. I had to restore the backup from the cloud as it wouldn’t take the backup from USB but that’s fine.
I lost a couple of aqara door sensors although it’s likely I lost them before hand, they’ve never been great. One won’t reconnect though as it keep saying it belongs to another homey device . . .
I had an IKEA strip light flickering, had to repair that and lost a govee matter device which repaired straight away.
Only main issue was hue without bridge, lots of devices needed repairing, some I had to remove and re-pair.
Generally pain free considering what it could have been and what I’ve had with home assistant failures in the past