There’s been a schedule change, will Aeroplan waive the change fees?

A while ago, I booked a trip between Sydney SYD and Nuku’Alofa (Tonga) TBU using Aeroplan. On Star Alliance, the only routing available is via Auckland AKL on Air New Zealand, and only in economy (Air New Zealand barely releases business inventory to partner airlines – however, you can typically find one business seat on Shanghai PVG to Auckland AKL). Unfortunately, the AKL-TBU segment is extremely challenging to get two seats on, so I was pretty lucky that I got dates that worked for my itinerary.