Can anyone give me a simple explanation of the difference on upgrade awards. I hear the codes UP2A and UP3A. I am a DM with lots of spare SWUs. Is it beneficial to use them when waitlisted on high medallion routes for Upgrade or do the complementary medallion upgrades as DM carry the same priority for upgrade? If the UP2A is a higher priority how do I validate thats the upgrade weightlisted in my reservation. Many thanks in advance