Minecraft account migration not working or failing? Here's the official word

Minecraft players are reporting that account migration is not working or failing. Here is what Mojang has to say on the matter.

It says I don't own Minecraft after completing migration. what happened? : r/Minecraft

All Official Minecraft Capes! : r/Minecraft

How to Recover Minecraft Worlds on Windows, Phone and PS

Postmigration issues - Can't log in with my Mojang account email address. : r/Minecraft

It says I don't own Minecraft after completing migration. what happened? : r/Minecraft

Texas requires tutoring for kids failing STAAR. But here's why students might not get it

I migrated my Minecraft account to the wrong Microsoft account. Is - Microsoft Community

Issues with simplified ribbon in OneNote office 365 : r/OneNote

How to Migrate Your Account from Mojang to Microsoft The Sandlot - A Family-Friendly Minecraft Community

I migrated my Minecraft account and now I can't log in. - Microsoft Community