Mojang Migration to Microsoft Username issue

Hi PrincessChelsky! My name is Ricardo an independent advisor ready to help you with this situation!

You should not have issues with your Java account as it will keep the same username, but for the bedrock edition of the game won't be possible to use a longer than 12 characters gamertag, you can share your ideas regarding this here

https://www.reddit.com/r/xboxinsiders/wiki/ideas/

Hey PrincessChelsky!

This isn't a place to request changes made to Minecraft, it's a page where Microsoft users can ask and answer questions about Microsoft, Gaming and alot more.

You can request a change to Minecraft by clicking here.

The problem is not logging in with my Microsoft account, I'm easily able to login, it's that my Mojang account did not migrate. No detail of my Mojang account was transferred and I'm essentially playing on a new account, none of my worlds transferred, my server progress, not even my username. My display username here is my old Mojang accounts username.

Hello, I'm Felipe and I'm an independent Community Advisor, and I'll do my best to help you.

If you have migrated your Mojang account to a Microsoft account and have lost your original Mojang username, you may be able to recover it by following these steps:

Go to the Mojang account migration page: https://account.mojang.com/migrate

Log in with your Microsoft account email and password.

Once you have logged in, you should see a message saying "You've already migrated!" Click on the "Need help?" link below this message.

Fill out the form with as much information as you can, including your original Mojang username and any transaction IDs from purchases you have made on your account.

Submit the form and wait for a response from Mojang support.

If Mojang support is able to verify your ownership of the account, they may be able to restore your original Mojang username. However, please note that this process may take some time and there is no guarantee that your original username can be recovered. In the meantime, you may need to create a new username and start fresh on servers.

It says this account has been migrated and to use microsoft to log in, but none of my microsoft accounts are connected to that mojang account, the microsoft username, isabelly6738, is even in my minecraft launcher.