I downloaded scenery from terraGIT for the area covering LFMT
The previous terrasync scenery I was using had 31L/13L and 31R/13R which are the same as the FG aiport maps.
The scenery from terraGIT has RWYs 30L/12L and 30R/12R.
I looked up LFMT on www.sia.aviation-civile.gouv.fr which is the French gouvement site and the RWYs are indeed 30L/12L and 30R/12R.
Ho do I update the FG data?