The fit file in question
drive.google.com/.../view
This activity doesn't want to sync with garmin connect/express but i can see the activity just fine on my watch.
When trying to upload the file manually on connect i get "An error occurred with your upload. Please try again.".
Using https://gotoes.org/strava/Combine_GPX_TCX_FIT_Files.php with the donor version it manage to work but the first run leg disapear when uploaded to garmin connect. (2.19km section where everything is working on runnalyze)
When uploaded to https://runalyze.com It works and detects the sections correctly.
Any Help would be apreciated to get it to work with garmin with the full length.