Originally Posted by
flyjfk
If I buy an economy ticket, and then upgrade to business with cash on "manage booking", do I get miles/PQP using the new class of service (which is business in this case)?
Yes you get PQP equal to the number of $ the upgrade is. I would think you get miles too. Often times it's cheaper to buy econ and upgrade with cash than to buy first outright. Be careful though, you cannot get a refund for the upgrade if your plans change.