Originally Posted by
xliioper
I've done changes/refares online when booked on companion certs a number of times. I haven't tested if they waive fare class availability differences for schedule changes, but online changes can definitely be done with them.
the last time this happened to me (schedule change in October for a flight in early november) I got the "there's a problem with your ticket, you need to call in" screen from the website when I tried an online change.