I already received all miles from my may-16 to may-21 long weekend trip (details posted above) credited to the two ff-programs (Mileage Plus and miles&more). I did receive the miles for the JFK-FRA segment twice (once in each program) - the LH agent at JFK seemed a little bit nerveous/confused when she had to change, at check-in, the ff-program aof my ticket from miles&more to Mileage Plus - finally Gisela (we checked in at the same time), received no credit for that segment at all, I got both credits (this is a sliight advantage for us, as the double='wrongly' credited miles in my miles&more account will help me to get the next complimentary Senator-upgrade vouchers earlier, Gisela is no Senator anymore - and Gisela does 'only' the 55'000-promo with one program = miles&more).