Am I missing something here? Were the TFLEX fares not created after the 2001 Certificates were likely printed? Hmmm...so what if it says only Y and M fares for Prestige - if the AC help desk says that Prestige may upgrade from T fares then I would think there must be some validity to this whole cause for concern. I, for one, continue to experience varying levels of service from AC in most areas, ranging from Aeroplan to check-in so perhaps someone should once and for all clarify the upgrade policy concerning the newer TFLEX fares in certain markets before jumping to conclusions...