I requested but ONLY because both tickets had LH upgraded legs on them and as you know you can't just change those tickets yourself. So, yes, I had help, but because of other reasons, i don't know if it would have happened organically or not. I had to change them because in both instances I ended up with a negative layover, so I had no choice but to change. Also, neither time did the flight with the STW get changed, it was other flights - one time was LH, the other was UA domestic flight.