Garmin automatically deleting activities/only able to keep one activity in history

I have a Forerunner 55. For the last few months I've been having the exact same problem as this person: https://forums.garmin.com/apps-software/mac-windows-software/f/garmin-express-windows/281944/garmin-deletes-my-runs-when-i-sync-except-for-the-last-activity-and-not-only-doesn-t-it-upload-it-it-deletes-it-on-the-device-as-well

Essentially, all activities except the very last seem to be automatically deleted. If I log a second activity on the same day without first syncing the earlier one, the earlier one will be lost- not just that it won't sync but it's deleted from the watch, no longer appearing in the Activities folder. So manually uploading to Connect is not the solution.

For example: today I did a suggested run workout, then stupidly did a cooldown that I logged separately before syncing the workout. Only the cooldown (i.e. very last activity) was synced, the workout was not and the cooldown is the only file in the "Activities" folder. However the watch must have some memory of the workout because, when I go to suggested workouts, it says I have completed today's. Is there anyway to recover the file?

Anyway, needless to say this behaviour is absolutely infuriating. I don't remember changing any settings, it just seemed to start happening a few months ago. Has anyone experienced this? How do I fix it?

  • i have a FR55 and the amount of random things that happen are too many to count.  having used one for about 18months, i would recommend that you do some sort of factory reset and take it from there. try not to install any custom faces or data fields until you are confident that it's doing all the basics (which in your case means not deleting new activities.)