upgrades come out of a different inventory bucket than officially available seats.
Standard award seats in W.B.C. come from the "D" bucket. Revenue seats (the expense account draining ones that business people use to get up front) are "C" and "J", and of course the occasional "Z" consolidator/sale W.B.C. seats.
For a B fare, I believe the upgrade bucket is ... ummm...
"I"?
[This message has been edited by DJMeatBall (edited 12-04-2002).]