Originally Posted by
FireEmblemPride
Actually, this isn't true. If I interpret the Narita Rule correctly, they need to maintain flights to the same country, not necessarily the same airport.
It has been a while since I actually read the guidelines, and I could not Google my way to them just now. However the country interpretation would be contradicted by Lufthansa keeping Frankfurt from Narita (supporting NH and their own move of the Frankfurt flights) and NH keeping Munich in Narita to allow the codeshare for LH to move their flight to Haneda. If you have a link to the MLIT text I would like to re-read it.