@Thomas-Neumeyer, to start with, MRA Route planner plans routes not tracks. As it stands (in the web planner) you can only convert a route to a track by exporting it to gpx and re-import it as a route-track.
My guess is that you are trying to navigate a route with the MRA App that was planned in a map other than the HERE map, and with a vehicle selection that is not compatible with the HERE map.
You can share the route URL here (set it to public first!), then I wil take a look at it.