Originally Posted by
mavericks414141
When you did this, did you mention at all to the agent about a mileage increase? Or did you just let it play out and see if they asked for more miles?
I did not mention it. At the end, she simply said that the system asked her for no extra miles, but for additional taxes, so then took my payment info. I made sure to select flights that showed availability for Economy Saver, so there was no change in cabin/award type and O/D stayed the same on all segments. But it was nice to be able to change date/routing/carrier all at the same time.