General Module 3 Swap-What Issues to Expect

[Danny2121]

Hi,
Sorry to bring this back up.
Last year I replaced my GM3 module to the latest version in realoem from a doner on eBay.
I noticed that I no longer have the passenger mirror tilt whilst in reverse and no seat memory.
I managed to change these back to active in NCS but I noticed a lot of other things turned off.
My question is do I/should I do anything else like vin etc…. Or do I need to reconnect my old GM3 module and compare what’s ticked and what’s not and simply just make sure the doner one is the same which will take long.
I also have as wondering if I’m better updating the ULF Bluetooth module to the latest gen if anyone would know how to do that, would Ista p be the best software for that? I’m new to coding.
If anyone could help thanks in advance.