Probably you need to have two different devices on your account at the same time. Probably the problem was that first was removed before connecting second.
Its data in my training sessions, which are in Garmin Connect. I do not see any contradictions. Or only manual additions counts? How about Smart Scale?
You need to have two devices listed, when you click on the watch symbol at the top of Garmin Connect Web. Do not remove old devices, simply just retire them when you do not use them any more.
a Garmin device?
