cancel and rebook
I have a round trip to Japan on the combination of AC, BR and NH, but AC moved its flight 6 hours earlier on the outbound flight, resulting a 10 hours wait on YYZ. I called ANA to request an outbound rerouting, and keep the inbound intact. They said no, only way to do it is to cancel whole trip, and do a re-booking, however, there is no availability on the inbound flights. if cancelled and rebook, will the seats be released and can be booked immediately? any DP? TIA.