Thanks guys. I thought the flight might be overbooked in Y (even though a couple of open Y and M seats remained for sale according to ITN) and they were invoking this unusual circumstance to maximize their ability to do operational upgrades. It just confused me to see the AC C-class at 0, while both Js were at 9 and 7 respectively, since CP's inventory never does show R-/U-class seats. I don't need to be back in YEG Tuesday night, just the next afternoon as my original plan [ex-YYZ] was to meet a friend coming in from YVR at 3:25 on an AC flight at the airport. Thanks for the offer Gabriel, I'll email you.