Hi

I'm wondering which method SD uses to calculate a course and track between two points - the reason being that if I use the GPS on one of my frequent routes to just 'direct' to destination from origin, then this causes me to just clip a prohibited area. When I the same route plan in SD, it shows me as remaining clear. The GPS uses great circle, so either SD is using something else, or someone's data is incorrect. In any case, it would be good to know what SD is using, as it means the transfer of a planned route may not be flown the same when transferred to a non-SD device.

(Route is LFGB -> LFDP and the prohibited area is LFP2 Civaux, software is Windows PC V3.0.6.0)