Migration was a complete nightmare for me. I had a couple of accounts for myself and kids. I used Gmail "plus addressing" for all the accounts. MS actively prevents creating accounts using email "plus addressing" so I had to go through the nightmare of creating several MS accounts and migrate each Mojang account. Every step of the process was painful and slow. And that was just the account setup part. Then I had to create user accounts on their Windows 11 machine and fight with the account linking there. Several hours, and an absurd amount of cursing, later, it was done. Never again. I'll just make my kids play on their Switch if anything goes wrong on the future.