I have a gpx file made with Garmin mapsource. If I upload this gpx to Garmin Connect some of the waypoints are missing.
For example, this course misses some waypoints:
https://connect.garmin.com/modern/course/236135336
Waypoints 3N, 5B and 16A are missing and maybe some others. Problem can be seen in both the connect web version and android app.
original gpx-file is here:
https://hazor.iki.fi/2023/halloween/gpx.old/160km-halloween-hike-2023.gpx
I have a different version of the same gpx. This version has been stripped of symbols etc. and now it works:
https://connect.garmin.com/modern/course/236131998
and the gpx used for this course:
https://hazor.iki.fi/2023/halloween/gpx/160km-halloween-hike-2023.gpx
There seems to be a real bug here as the first gpx-file is just as legit as the last one. First is made with Garmin mapsource. Last one is my own modification of the first one.