You may talk to the AA RTW desk about your routing but if you are issuing your ticket outside North America, all fare calculations are done in Dublin. AA in US will not work on your itinerary... at least not that they do it for ticket issue in say CAI.

If it's a reissue, the same applies as above. Depends on where you are reissuing. If it's within US/Canada, then the US RTW fare desk will take over.