I want to know does the retirement of 'easysabre' effect the airline's reservation system? I travel mostly on CP and upgrade seats used to become available right at the 72 hour mark. However, since the returement of 'easysabre', this is not the case. I don't know exactly when they became available. But sometime after the 72 hour mark.
From my understanding, they still use the SABRE system.

Regards,
Empress