I have a whole set of duplicate activities that have just appeared in my Garmin connect going back several weeks. I'm using a FENIX F3
What shows in Garmin connect is the original unedited activity and the edited activity suggesting this has reloaded the data from the watch.
I can delete them but im reluctant to do so if this is a known problem that is going to be corrected resulting in me losing the data I haven't deleted.
Sorry found duplicate on other thread
https://forums.garmin.com/showthread.php?347388-Activities-Doubled-Up