Even after the twenty-four hours, they talk about it does not seem to sync correctly. I do similar steps on two days running. The first day the sync is good. The next day no sync but it does it overnight. Yet the calories awarded is significantly different between the two days on virtually the same number of steps!

I stopped logging my food or anything on MFP, and am logging it on the Fitbit site/app instead. If MFP ever starts to sync with Fitbit again, I may come back.