I can't speak for the program rules for airlines other than AA, but I have been working on a RTW award ticket from then. Whenever I get stuck I ask them to read the rules to me, exactly, and twice, just to make sure I hear it right. With an AA OW award once the ticket has been booked there can be no additions or deletions of stopovers or carriers. They were pretty strict on this one. NO ROUTING, STOPOVER OR CARRIER CHANGES ONCE TICKETED. Good luck with this on other partners. I know the rules do differ greatly on things like open jaws and mileage calculation.