The question is not how to import a gpx route to my device... I want to see it online in my garmin connect web interface (https://connect.garmin.com/modern/)
any ideas?
How do you do that?
I hope that one day it'll become possible to directly import a course as a course
it's possible now , but unfortunately it's not straightforward: you have to import your gpx as an activity and then convert that activity to a course.
(then afterwards: delete the activity and also delete it from your synchronized accounts such as strava etc...)
I'm sure that's possible but it wasn't the question. It was: how do you import a TCX file as an activity and then convert it to a course? I know about the little blue button, but If I try to import a TCX I get a download error. If I download a GPX file it disappears.
I got the file into my Garmin edge 1000. I can see the route but I want to edit it in Garmin connect.