Late last night (after 1am CST Sunday morning) MS contacted me that they have rolled out some fixes for TGB account migration. They have fixed the Validation error now. Those that haven’t tried since Saturday should try to migrate your account again. You only get one try per password reset on your TGB account. If the password box clears after your attempt then you have to reset your TGB password.
For some reason my account still won’t migrate. I suspect it is due to creating a new temporary account and I have been posting a lot with it so the system must be having difficulty folding them together.
But over the day (Sunday) I have seen some people have now successfully been able to migrate their account the previously couldn’t.