I have an upcoming DEN-ORD-MHT...PWM-IAD-DEN (fun) trip coming up. As a blessing for my bride who is coming along, I upgraded the trip with miles. Three of the four legs upgraded (including the CJ!), but the ORD-MHT (735) didn't. There are two people up front right now, so the rest must be under capacity control, so that leg is waitlisted. It's been showing that way on-line since shortly after I booked it. However, today, that status disappeared.

I called the 1P desk, and they tell me it's still waitlisted. All fine and good, but... ummmm... Why can't I see it any more?

Another united.com mystery.