American Airlines has two frustrating, little-known rules for frequent flyers who like to redeem miles in one program and use the benefits of elite status from another – or who want to use their AAdvantage elite benefits while flying American, but earn miles in another partner frequent flyer program.
You’re not allowed to switch out your frequent flyer number and accrue miles with a partner after you’ve used benefits of your AAdvantage elite status. You’re not allowed to use AAdvantage elite benefits when traveling on American through a partner award redemption.