Well I'm going to answer my own question.
After some research
and discussion with Navico
, there is no way in the chartplotter
to export a single
element such as a route
, track or waypoint.
For me, what was easiest was this:
Export the .usr file and get the file on a real computer
Convert the .usr file to a .gpx file
Use a text editor to find the route
by searching for the name I gave to it on the chartplotter
Delete everything but the track and the file header in XML format.
Save as a new file and test
It worked for me.
I used BBEdit and collapsed the data to level 2 which made the process much easier.