@Michael-Wilkinson I have seen when exporting from MRA to BMW Connected App, there's typically 2 routes downloaded. One with minimal amount of waypoints and the route doesn't follow the roads, the second navigation route has thousands of waypoints. I wonder if this conversion is done automatically with an export. When I see this, I export gpx v1.1 and it has 2 or 3 routes/tracks within the export.
Have you tried this?