I just update(7.20) my device this morning before training and when I finished training all of my rides and activities has been disappear including todays.Any ideas?
But it was a bit different - after I connected my Garmin to Garmin Connect on Mac, it made some updates, but not to 7.20. Since then I started seeing weird things, which I described in the post. Two upcoming activities were lost. Then the device updated to 7.20 automatically and all my history was back to normal. Since then activities are saved correctly, but those two are lost. I think they made some changes in the internal storage format or something. I suggest contacting Garmin support.
