Originally Posted by
YacozA
This is my exact experience. Several times I have been bumped on a miss-connect and placed in the last available Y seat, only to be gate-upgraded to J as my original ticket, ahead of the official upgrade list. (sometimes to the dismay of AA EXP's)
The only issue I have ever had was retro-actively claiming J TP, as BAEC receives it as a Y/J.
This has nothing to do with AA's UG policy.
If you are an IRROP'd passenger in paid F/J and there is no availability in F/J in the rerouted flight, you are still a paid F/J passenger and come ahead of the UG list because you are not looking for an UG but rather accommodation in your ticketed cabin.