Hmmmmmmm - the post of Gruun is not consistent ( probably therefore the post from linux-user ):
- export route in gpx-format to the Micro SD of your Garmin
- on your zumo go to tracks; import the file you saved to your micro SD
- open the track
- on the left upper side use the convert to route option
So I think Gruun exports the track, because you can open a track and convert it to a route only if you export a track…
@Thorsten: Which Zumo do you use?
Regards
Markus