This is going to be a big problem for anyone that has purchased xONEs during the 10% sale period with AA. Just been dealing with AA DUB on a post 10% DONE3 (ex ICN) date change. As suggested above they are claiming I need to reissue and now pay the 10% fare difference. Interestingly they dont seem to be charging me the $125 reissue fee. I have pointed out to them the rules at the time of purchase clearly state for TC2/3 there should be no charge for time date/change. They claimed that there is some rule I had missed so I asked them to send me that rule and I would be happy to pay.

Got a reply today saying "Unfortunately, for security reasons, American Airlines can not give out confidential IATA rules to passengers". While reply is utter nonsense (and most lilkely violating multuple consumer protection laws) I am not sure what my next move can be. I am reluctant to pay but unless I do something I will end up with the 5% no show penalty. Though of perhaps just contacting CX and trying to get the date change through (since they have 1st segment) and hope it jsut goes through but suspect the 001 ticket number will create problems.