AA award taxes
10/25/17 $155.46 x 2, full amount refunded by AA on 11/15/17
11/14/17 $131.56 x 2, full amount refunded by AA on 11/23/17
11/25/17 $89.76 x 2
These charges did NOT trigger the airline credit. They were refunded due to schedule change with AA. Since there were 3 full weeks between the first charge/refund, I suspect AA award taxes no longer work. Or perhaps the amount is just too high?