I'm trying to convert the classic method of signing in to Live ID but it isn't working for me. I sign in using my username / password, go to profile, edit profile, click Switch to Live ID, click Switch, log in on login.live.com, click the "Confirm" button on a page where I can see my Live ID (borekbernard@hotmail.com) and them I'm redirected to a page that says:

Congrats! Your Channel 9 profile is now associated with this LiveID:

The Live ID is empty in this message and the next time I try to log in on Ch9, I am redirected to the /register page where I am prompted to choose a user name etc.

Tried this in Firefox and Chrome, same behavior in both. Is that a bug?