I've just run in to a really annoying issue with Windows 8.1 - it seems I cannot remove the need to use Live ID credentials from an account without completely deleting that account.

I know the process to do it - use the Disconnect link from the Accounts->Your account screen. The trouble comes when you get to the Switch to a local account screen, it will not let you enter the current account for the user name, instead you must enter a new one thus creating a new user account.

Can I revert back to using just a local login without having to recreate the account?

It seems quite retarded that I have to recreate the account, as deep down the only change required is which credential provider is used to authenticate the login.

(Note that this Live ID linkage was created by using the Windows Store, not as a result of an upgrade from 8 to 8.1).