Why is the calories count from an activity on my 1040 not showing correctly in the calories counter on Garmin but is correct in my fitness pal?

In MFP it seems to show the total calories for an activity (resting +active). In Connect, it only shows the Active calories (the additional calories burned during the exercise over and above the calories you would have been burning anyway if you just stayed sedentary). 

The Garmin method makes more sense to me but may explain why there is a difference.