I have a F award NRT-ORD in October booked with AA miles and was notified of a significant schedule change to the timing of the flight (~10 hours). The HND-ORD same day is better timed and closer to the original NRT-ORD departure time. Does AA have the ability to request JAL open space to confirm on this flight given the significant schedule change and is it something they've historically been willing to do? I saw mentions of such a request on the Atmos thread for JAL awards but couldn't find it here so wasn't sure if AA would do the same. Not sure if F will make it more difficult but my ultimate goal is actually a J seat on the flight as my two traveling companions already have J seats on the same flight. They have the ability to move to the NRT-ORD directly as they were direct booked with JAL miles so if AA is not amendable I may end up just cancelling and hoping for a J seat last minute. Thanks for any insights.