I booked two flights as MR to get the DEQM. When I booked them, all the flights said United with a United flgt #. Now I look at my itinerary and I see 3 of the 6 flights say United "operated by" (they do not say who they are operated by yet but I get the feeling they will end up being code share flights). First, why is this happening? Second, do I have a right to the originally booked mileage? I am only doing these for the DEQM and if I am going to not receive credit because they are codeshared now I will be very angry. Finally what should I do to make sure i get credit and DEQM's?