TomTom to Nav6

[Stormforce8]

Hi I'm in need of some help!
I have some files that I want to upload to my BMW nav6. They were created on a TomTom my drive app. I've managed to extract the gpx file but when I upload this to MyRoute app the whole route changes, the only way I've found to keep the route the same is to upload it as a Route track. however, I then cant seem to get it to upload to my Nav6.
I'm doing the same thing I've always done. The app says its downloaded, but when I switch the Nav6 on there is no route to import.
Any advice would be appreciated.
many thanks in advance

[Gerard Wullink]

@Stormforce8 Bare in mind that you change the map from TomTom to HERE and you change the route calculation, again from TT to Garmin. Its not strange the resulting routes differ. Also the settings in de navigation devices can differ; avoid ..., fastest versus adventurous etc etc.
What you should do is import the gpx from TT into MRA on a HERE card (which is used bij Garmin/Navigator). This wil give a different route. Now add the gpx file as a layer behind the route. Add via points until the routes are the same. Now export to your Navigator. Have fun!