Hi
Having a repeated issue (3 or 4 times now in the past few weeks) where I go for a run, and then when I connect the watch to my mac - for some reason all the data is wiped - presumably as I sync it.
It appears to sync fine, but then there is no record in Garmin connect.
If I navigate to the activity folder it is completely empty.
I do not make a habit of deleting the data until I get the message that it is full, so it's not something I can really do by accident.
The slightly weird thing is that it only seems to happen on evening runs, not in the daytime (I appreciate correlation does not prove causation!)