After inquiring recently with United's Mileage Plus, I received the following response:
"Hello Mr. GJS - yow,
Thank you for contacting us.
Normally, we do not offer any Elite Status Matches for any of our Star Alliance members, in this case Air Canada. However, effective as of September 2nd, we do now offer status matching with Air Canada.
To be considered for our Elite Status Match promotion, please forward your name, address, account number, e-mail address and a copy of your most recent summary from Air Canada that shows your name and your current status with them. You may send this information to the Elite Status Match desk by fax at 520-881-4458 or you may write to:
Mileage Plus
Attn: Elite Status Match
P.O. Box 28871
Tucson, AZ 85726-8871
Thanks for choosing United and Mileage Plus!"
I sent in my Aeroplan Elite/Star Alliance Gold evidence, and a few days later my Mileage plus account was Premier Executive!
Thanks again to all who share their experiences on FT.