How do I redo checkin? I just bumped up a notch in premier status, I have a flight in about 3 hours, I'm already checked in, and the status difference might well be the deciding factor for whether I get upgraded or not.

The wiki says to redo checkin, but the old option to undo checkin isn't there anymore. And if I just go through the normal checkin process (on the web page or the app), it tells me I'm already checked in, and it doesn't seem to update my status (the boarding pass still shows my old status level).

Any suggestions?