I have 2 (F) award tickets on partner airline (CX) to Europe via Hong Kong.
CX however cancelled the 2nd leg (HK to EU) and put us on the same flight# departing the following day, which created an unexpected stopover (over 24hr) in HK.
I just called up AA to reconfirm my new itinerary but was told that they would require additional miles because of the stopover!! Although when I called them a while back (months ago) when I first found out about the flight cancellation, AAgent was ready to reissue the new tickets without additional miles. So I wonder what their official policy is in this case?

I already have booked a hotel in HK and bought a flight ticket for another family member (elderly and cannot stay in HK by herself) to mirror this change, so we really need to stay overnight in HK. I would really appreciate it if anyone could give me suggestions/answers.
Thanks