I seem to be getting mixed luck. I've had the majority of my purchases post eventually (after 1-2mo). However recently I've had about a half a dozen purchases using the portal and only one of them posted after just 2 days. I'm glad that it posted so quickly, yet at the same time I worry about the other purchases I made. Does AA do a sweep and post purchase miles periodically? Or do they post as they are confirmed by the merchant?