When booking a flight, even if I were to put in my AS FF#, it appears I still retain VX Gold benefits on choosing MC seats with option to select auto MCS upgrade.
Will booking this way with my AS FF# still enable my Gold 24 hr upgrade option? If not, then it may be better to (1) upgrade at T-24 and call in to input AS FF#, or (2) just complete the flight, then submit an online request to AS for the mileage.
If I'm reading it correctly, with the MVP Gold 100% bonus, a RT SFO --> NY flight could yield 5,000 miles. This is a nice return for lower cost flights.