The AA refund mechanism definitely leaves something to be desired. I actually have a refund in process now (not even to original payment, but to credits) where it was Mrs. dlnewbie and I on one PNR. Refund requested for all pax at same time and hers has returned to a credit, while I am still waiting on mine three days after hers credited. Any other airline I've refunded to either original or credits, it processes all passengers on the same PNR at the same time. They do usually get it right over time, but can be frustrating. Here's hoping that maybe they'll will invest in systems at some point.