What about changing a flight that bumps down a cabin and changes airlines, but maintains the same origin/destination cities?
I booked two tickets flying I on OS from FCO – JFK via VIE at @50K a piece. I may have to change the date and the ticket, to flying X on LH from FCO – JFK via FRA. Origin and destination cities remain the same, airline changes, and I’d bump down a class from I to X. If I do that, would I just have to pay the $75 change fee, and would I get the 40K pre-deval miles credited back to my account?