<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Steve M:
I had a ticket reissued over the phone, and had the EUA upgrade it not 5 minutes later </font>
Had this exact thing happen two days ago only one segment upgraded a couple of hours after the change and the second segment didn't upgrade until I got to the airport. So, I don't think making a change to your itinerary will drop you out of the loop on its own.

But a few dropped key strokes from CS might.