Originally Posted by
Efrem
Please see several threads in the AA forum documenting this, citing the specific verbiage AA uses, and discussing why they do. If that is not enough to convince you, I may have saved copies of communications I have personally received with this statement. It did not come out of my imagination.
The OP's example involved NW, DL, and UA. All three of these airlines are well-known to provide credit for original itineraries in the event of involutary reroutes.
Sorry about AA.
For the OP:
UA: Submit written request for original mile with copies of as much supporting documentation as you have.
NW/DL: Decide where you want the miles to post and submit a missing mileage request for the missing segment.
I do this numerous times every year, have to do it again after we return home this week.
In the case of NW, this is their policy
as spelled out on nwa.com:
Passengers are entitled to mileage credit when rerouted on another carrier due to operational reasons which occur at the airport on the day of travel.
I'd hardly call that "controversial".