I had AA change a CDG-ORD-BDL into a CDG-ORD-BOS routing, due to a 70 minute change in the departure time of the ORD-BDL flight (made it later). Added benefit is that I get to extend the VIP to to domestic leg (went from an ERJ to a 738).
Interestingly, my C Class fare bucket for the CDG-ORD flight turned into R Class when the ticket was reissued.