I was one of those impacted by the massive PHL schedule change (almost 12 hours change) for November that was loaded in April however the trip was so far out that so I took my time to think about my options. Then a few days ago I got an e-ticket email from QR with the new flight schedule.
Finally made a point to figure out what I wanted to do (change my DOH-CMB connection to a later flight) and over the phone the agent said the Colombo office re-issued my ticket with the new flight schedule and indicated in the record that I accepted the new schedule. I never did.
So now his advice was to talk in person at CMB or DOH on my outbound flight next week to discuss the changes to my inbound trip as he is now limited in what he can do since the new schedule has been “accepted”.
What I learned here - When a schedule change loads and you don’t like the new flights figure your options and call ASAP.