After searching for hours across threads for Edge 1040 and older devices, I found no workaround to update Totals.fit with total mileage on a bike.
I understand that most users can rely on track mileage on selective gear in https://connect.garmin.com/modern/gear and www.strava.com/settings/gear
But why don't they allow users to manually update the odometer? I want my new device (Edge 840) to show continuous mileage recorded by the older generation Edge.
Edge 500: bike A = 5927 miles
Edge 840: bike A = 23 miles
Desired outcome:
Edge 500: bike A = 5927 miles (retired device)
Edge 840: bike A = 5927 + 23 miles (new device)