My Experience is slightly different, booked IAD-LAX on UA metal for 12/23 and SNA-IAH-DCA on CO metal for 1/4 through co.com. Was able to get seats on the IAD-LAX flight, but no indication on united.com of my upgrade "pending, waitlisted etc" although i did get the UDU at the gate. I called a few times to see what the issue was and was told i was on the waitlist, even had the agent remove my MP number and add it back to no avail.