Join Date: Aug 2002
Location: WAS/TYO
Programs: UA 1K, AA EXP (3MM), DL PM, BONVOY TITANIUM, HYATT GLOBALIST, HILTON DIAMOND, IHG DIAMOND AMB, et al
Posts: 5,915
No. You need to decide which program you want to reap the benefits of but you cannot use both simultaneously. To use your 500mi upgrades, you'll need to have your AAdvantage number tied to the reservation. Unfortunately, you cannot wait until the upgrade clears and then add your Alaska Mileage Plan number without losing the upgrade.
-FlyerBeek