Not sure if this has been posted, but was something that I was struggling with.

The AC website doesn't seem to split Premium Economy upgrade availability and Business availability when displaying eUpgrade availability. It displays that eUpgrades are available when they aren't (even when you select "Business Class" from the "Upgrade to" pulldown in the "Display Options" modal). I was banging my head against the wall figuring out how to show just Business eUpgrade availability.



Regular Air Canada site showing eUpgrade availability, even though it isn't available for Business Class.

It looks like the Corporate Rewards site actually works like it is supposed to:



Corporate Rewards site works properly (although they might want to change "UpGrade" to "Upgrade").

Can't believe the normal site launched without this working properly (well, on second thought I totally can).

Hope this helps others who have been having the same problem.