Originally Posted by
JDiver
He’s not, really. It will likely go to J0 D0 I0. J1 D0 I0 means RM has ceased selling lower fares (which may mean they’ve sold the quota of discounted fares RM established forbthat flight, or certain requirements have expired - such as APEX, etc.) But AA RM is arcane and proprietary, so we’ll not know much for certain.
My understanding is that inventory classes can continue to be "available" even if there are no applicable fares such as when it's too close to departure to satisfy advanced purchase requirements for all fares of that class.