If the route is only one day, import it straight into kurviger with about 2-5 Waypoints per 100 kms (as a rule of thumb, I usually import a daily route of 300 - 400 kms with 50 shaping points into kurviger). And use the direct and fastest option to calculate route (you can try different routing options already within kurviger.) I always check what has been imported and the kurviger’s calculated navigation route (even with the fastest option, sometimes kurviger gets me into villages instead of around then, but only sometimes… It normally works very well.)
If your furkot’s route has several days, I export from furkot using gpx or kml file and then import it into locus maps. From there, I export it per a day basis, whenever I need it, or one by one, just to check its import into kurviger and store them as .kurviger files.
It would be nice if kurviger pros would talk to furkot in order to use their REST API to get into furkot without using files… Just an idea for the TODO list, if possible
I hope it helps.