Originally Posted by
YHZ_Flyer
Gotta love when sched changes allow you to change to a better flight. Used them to get off flights on the 320 and onto a widebody, or even go from a tango fare, to a flight with only latitude left

For the record, it's very possible for them to rebook you into K on a flight that's Y1 B0. I find it's faster for them to rebook you into available classes though.