Originally Posted by yyzprincess

You were lucky. There was Glitch.
LHR & SYD are my destinations.
With the introduction of E-Credits, if AC 33 is not booked as a through flight you have to wait for the window to open for each segment.
There no ifs & buts about it.
No way can you upgrade YYZ-YVR
YVR-SYD when only the window for YYZ-YVR opens up.
Even Concierges cannot do it.
Many a times I am travelling when my AC 33 YYZ-YVR & YVR-SYD window open up.
YVR concierges do upgrade requests for me & they have to wait for each segment window to open up.
If they cannot do it, you cannot.
I have doing this route several times a year for the past decade.
How many times a year do you do this route & for how many years have you been doing it?