I migrated my account a few months ago and it was working fine with the Minecraft launcher until I installed the new launcher from the Microsoft Store and now whenever I launch the launcher it says that I have not bought Minecraft or Minecraft dungeons when I have both. Luckily I still have the old launcher and it still works just fine. I have tried logging out and logging back in, closing the launcher several times and reopening it, uninstalling and reinstalling it, and it still says I have not bought the game. I also tried changing accounts on the Microsoft Store and nothing.