And to add to this, just because they give you the upgrade doesn't necessarily mean they also pulled the miles from your account. Everything is electronic now and mileage upgrades are done by getting a ticket number or some long electronic coupon numbered issued that pulls the miles and gives the ticketing agent the authorization to ticket the upgrade. I had two cases where a milesgae upgrade cleared and one time they issued the "coupon" and pulled the miles automatically and one time they didn't. And they were both on the same PNR. The good news is that when they do the pull the miles it will immediately show in your account on AA.com so its easy to spot along with the upgrade.