Originally Posted by Mattman
.....One point I do want to clarify. If I am confirmed in F on the original (later) flight, I assume that the stand-by request doesn't pull the upgrade. I would keep the upgrade and give it up only if I'm accomodated (in either cabin) on the stand-by flight.....
My understanding is that you are asking about your upgraded status in your original (later) flight. You will keep it. Being on the stand-by list does not pull you out of your original seat.