Numerous reports are that Citi is not allowing product changes from the American Airlines AAdvantage cards to a ThankYou or to a DoubleCash card. You can product change to another American Airlines card or to the Costco card. (Not clear why Costco is grouped with the American cards.)
Previously, Citi was more generous than other card issuers, and allowed product changes out of the AAdvantage cobrand into another line of cards. They are no longer allowing that, and it’s not clear if it’s something temporary or a permanent change.
