I frequently do 2 activities when I train one after the other. However, there appears to be a bug. If I do my activities away form the App (my phone) and save each one and then reconnect to the APP (my phone) both activities are recorded and appear on the Daily Home Screen. However, if I fail to save the second one before my watch connects back with the APP (my phone) the activity is lost This happens even if you save it immediately after the connection is made. It has gone. I have retried this many times and the results are 100% consistent. The second activity is lost. Info such as steps, intensity minutes etc. are recording and included in your ongoing total but no activity detail.
Can this be fixed? Is it something to report to Garmin? I am living with it and keep reminding myself to go nowhere near to my phone until the second activity is saved.