Originally Posted by
YYT82
AC managed the transition poorly. What they could have done was keeping both systems live for up to a year, with transition date like November 18th being the date after which all new bookings are made with Amadeus..
This simply would not be possible for this type of transition. DCS needs to talk to the reservation system. They can make legacy DCS talk to Amadeus (which they have done, and is also a source of some of the current airport issues, but still better than switching to Amadeus DCS on day one). They could potentially make Amadeus DCS talk to RESIII (although I don't know why they would want to). But they can't make one DCS realistically talk to two reservation systems at the same time for passengers on the same flight. If you think things are messy now, running parallel systems would make it much, much worse.