I had an IAH-LGA-IAH ticket, outbound in Y(K fare) and inbound in F (A fare). I called in this morning to upgrade the outbound, and it went into Z, but oddly the return also became Z. Will this cause any problems for me? I think A is a higher fare then Z, right? Why do you think this happened? Just the best way to refare the ticket?
It was probably cheapest as a roundtrip Z so your entire ticket repriced.
A is a first class fare, Z is a business class fare. One is not really superior to the other. They are both discount fares.
Also I never received a new eticket, and the one in manage booking on the website still shows the old fare classes. does this mean it wasn't reticketed properly?
Give that time and the e-ticket should update to show the add collect.