Hello all,
Not sure I understand this correcty...

Looking to upgrade AC195 B fare ticket to Biz using Aeroplan miles.
Expertflyer shows Z=9, but got message "Upgrade not available for this flight" on Aeroplan website!

AC 195
YUL 05/28/15
6:25 PM
YVR 05/28/15
8:46 PM
333
Daily
73% / 32m
Business - E-Upgrades R 4
Business - NA - Upgrade from O/Y/B Z 9


Am I missing something???
Thanks