Originally Posted by
frappant
But by the time the cancellation occurred, according to the AC agent it was on Nov 5, I had boarded both AC flights.
So why is it automatically canceled but it ignores the fact that I boarded both AC flights?
AC’s system didn’t get the memo in time. Count yourself very lucky.
Originally Posted by
frappant
So there was some kind of separate pricing of the outbound and return. Yet they didn't return any miles.
UA does not allow you to convert a round-trip award to a one-way award after departure. Therefore, no refund was due if you’d decided not to take your rebooked flights.
ETA: If they’d been canceled
unused, you could have redeposited the entire amount for a $125 no-show fee. However, since you did use them, you weren’t going to get a refund. If you had returned in Y, they’d have given you a refund of the difference between J and Y on that segment, however.