Very long rides are missing from import

Support
1

I do randonneuring events and all my +600km rides are missing from the imported activities.
This year’s examples:
https://connect.garmin.com/modern/activity/1857604319
https://connect.garmin.com/modern/activity/1895546510
https://connect.garmin.com/modern/activity/1790595472
https://connect.garmin.com/modern/activity/1819219032

2

Try importing them using a different format.

3

I imported the fit files manually (tcx were too large).
Both 600k files returned an error like “2017-06-24-07-06-09 had an error during processing” after being successfully uploaded.
The +1000k files were too big to upload.