Not sure if best posted here or in AA, however...

I ticketed (AA in Canada) a DONE5 ex icn before the price increase. I need to make a change in routing and called the AA RTW desk. They tried to tell me a mistake had been made on the cost of my ticket (I was undercharged) they said they would honour it but I could make no changes even if date/time. I suspect they are mistaken (I paid around 7,700,000KRW) -they may have not realized that this was before the price increase or that it was ticketd in Canada. Anyway, in checking posts I noticed there was some debate as to whether ticket re-issue (for re-routing) done after the price increase would be done at the new prices (still a DONE5 and still under 16 segments). Has anyone any experience with this. Thanks