Originally Posted by
dyrewolf31
No dice
"Your flight is operated by American Airlines. We cannot retrieve your American Airlines booking reference to transfer you. Please contact American Airlines on https://www.aa.com"
That is really good to know UncleDude... I can only hope that AA's engine automatically grabbed me a seat and it sticks. I will post findings tomorrow. Thanks for the info.
So for the record, the seat printed on my AA.com boarding pass was for real, and I sat in that seat last night DFW-LHR. Hope the info helps someone in the future.