How does Fitbit transfer calories burned to MFP

I received my new Fitbit Charge HD yesterday, set it up, linked to MFP and had it with me all day today. The MFP seems to have transferred all the information I entered into it: breakfast, snack, diner etc., over to the Fitbit but I don't see where the Fitbit has exchanged its information with MFP.

According to Fitbit I covered 11,000 plus steps today but I can't see that showing up in MFP and I'm wondering why. I'm wondering of course what the calorie burn is and how that affects the goals I've set myself. Does it only transfer the information at midnight or is there something I may not have set correctly.

In short, I suppose I'm asking what do you have to do to get the information flowing the other way?

As always many thanks for your help

Kevin