Yes there is, as I discovered the hard way. The folk at AA's RTW desk in Dallas do seem to know what they're talking about (though even there it's the luck of the draw as to which agent you get). Though it resulted in a large phone bill, I dealt with them for the changes then got them to message DUB with the info.

Unfortunately even then AA DUB would try to undo some of the good work, thinking they knew better.

I've never had to monitor a RTW so closely for renegade changes as I have done this time round with AA. Anyway, lesson learned, the next one will be with BA or CX (the former of which wasn't an option last time I booked ex-CAI).