In these particular cases, the cities are from MRU and STO. I read the rules like R2, but I know in the past that people have said that you can't without a reissue. And I *think* the AA RTW desk said no because the fare is dependent on the first segment, but I know that they are far more familiar with the rules from NA than Europe or Africa. I can understand if you change the date so that you are going into the next economy "season", but if not, then I don't see the big deal.