Hello @MojangSupport, about a year ago I did a migration from my mojang account to a microsoft account, and while i am logging in it apears that i don't have game anymore

This usually indicates that you're signing in with the wrong email. If you're seeing demo mode or are being prompted to repurchase the game, remember to use the Microsoft login option with the account that you migrated with. Let us know if you're still having any trouble! ^FF

when i am logging in to my microsoft account it shows i don't have game and i need to purchase it again.