Originally Posted by
alexthe5th
Does changing the FF number online after you've submitted your upgrade request (and are waitlisted) affect your position on the waitlist or ability to upgrade?
AFAIK you need to have your Aeroplan number attached to your booking as long as you are not confirmed in R class. I know of a few people who successfully changed their FFP at the gate in YYZ after they won Aerolotto but now reading your story apparently YMMV.