<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by Cory6188:
However, Z is the upgrade bucket from Y fares (I believe) so Z is always larger (or equal to R). If Z is 0, then I can guarantee you that R will be 0 as well.</font>
That's certainly the case for upgrades to J from Y, but I don't think that's how upgrades to F work. I thought the deal was that upgrades to F from Y came from "A"?