:-) sorry for using wrong terminology. I guess I have to be more precise.
So, on AC yyc-nrt, I got invited to the section where the seats converts to bed, the food is free and better then in economy, and where there is little to no waiting line for restroom. Funny thing is I tried to use eUpgrades before the flight and my fare class didn't allow for it. No, the flight wasn't full at all.
On LH, the upgrade I got was from economy to business. Not first.
I hope this add clarity. Anyway, I just wanted to see if this was frequent for *A partner to upgrade member of a partner program. Thanks for those who answered!