First problem is that always we have the difference in the rest of calories to consume indicated in GC and MFP:
The difference is (settlement activity of MyFitnessPal – BMR of Garmin Connect). And it seems to be a bug.
Settlement activity of MyFitnessPal I take in MFP here:
It depends of this setting in MFP (it isn't BMR!):
And BMR in GC I take here:
Second problem depends on the first one. If I change my settlement activity in MFP changes the goal for calorie intake in GC. But all settlements are made according to real data of daily activity and settlement activity in MFP is used only for forecast construction about expected activity. Not to change goal for calorie intake. So the only way to take more accurate data in GC is to set settlement activity in MFP to the lowest level. In this case the settlement activity in MFP will be closer to BMR in GC and the difference will be minimal. But not zero nevertheless.
I hope the algorithm of data exchange will be improved in future to get similar results of two programs.