In a few weeks, I'm doing an award flight SFO-KIX. At the time I booked, XC space was available but XF wasn't. So at the suggestion of a helpful res agent, I confirmed business, took the miles out for first, and was waitlisted -- supposedly PA priority, for first. I am a subscriber to Expert Flyer so I also put in an alert for the first class seat. This morning the alert triggered. So I checked my booking and amazingly (a) My upgrade request just disappeared. and (b) I was still in business! Fortunately, the seat was still available so I was able to call and grab it. But without a secondary check and some luck, I would have not gotten the upgrade. What a pain .bomb is! And score one for Expert Flyer!!