The last 2 rides I have done, I had to load new tracks to continue navigation, example, last ride I split in 3 tracks of 120km each. I did the whole ride in one go, the GPS gave me 364km, 19kmh average, calories are also Ok including temperature, altitude...etc ..but it only saved the first 120km of the activity track...there is no track of the rest of the ride...Fortunatelly I also used a FENIX 7X so I have every data to compare...
This situation happened already 2 times, and the only common factor is that I had to load a new track mid-ride.