OWE ticket reissue
I have a reissue problem with BA. I starte my DONE March/02 from CDG. Original itinerary had six segments in NA on AA. I need to change the itinerary. I have already travelled ORD/MSY MSY/ORD. Next up was supposed to be ORD/SJU/AXA AXA/SJU/ORD. The AXA/SJU return was in M class. My new itinerary is as follows: YYZ/MIA/SXM AXA/SJU/MIA/YYZ. The segments are booked in D class except for AXA/SJU which is M class. When I asked to rate department to rate the fare, the following occurred. Since I now have seven segments in NA, I need to purchase one additional segment. The want to use my last segment as the extra one (MIA/YYZ) and charge me USD $400. I'm not clear on two rules as I read them in FEWMILES Oneworld link. Can I not count the AXA/SJU as my extra segment since it is in M class. Also, since the trip was ticked with origin of travel as CDG, do I not pay the extra segment in EUROS rather than USD. The difference is as follows: for M class 100 Euros vs $150. For D class 300 Euros vs $400.
I have been back and forth with the BA rate department for the past week with their insistence on charging me $400 vs my belief of 100 Euros.
Thanks Doug