Originally Posted by
HeadInTheClouds
I've never had an issue with the MQM/MQD portions posting. But I've always lost the value of the upgrade when making a change. That said, I'm pretty much always changing routing, dates, destinations, etc. as I'm not a "point A to point B" traveler generally. Maybe if you're changing it for new flights but on the same segments, the agents have some options. If changing to a new route, the value of the upgrade fee disappears when reticketed, every time IME.
Interesting. Now that I think more about it, the MQM/MQD credit issue occurs when I do an SDC on a ticket that I did the buy-up after purchase. Somehow the buy-up part gets disconnected.
Now, if you want to cancel a ticket that had a buy-up my experience is they issue a credit for the original fare and refund the buy-up. Maybe it wasn't that way previously, but with the current change fee waivers thats what I've seen.