Originally Posted by
golfmad
Don't forget that there are situations where it helps the airline to move you to a different flight and gets them out of a potential pickle.
Sure, and I wouldn't expect it as a matter of course either. But at T+3 for my original flight and T+1 for my earlier flight I looked at the seat maps and both were only about 50% allocated / blocked so I think it was just a case of overall light loads.