I have two computers that I'm syncing - A & B. I have added folders on A. I then shared them to B. I can see syncing occurring. B has a folder called Pictures, which has lots of content. A has the same folder with much less content. The sync has completed for this folder. However, the sync from B to A did not occur. A does not have all the content of this folder that B has. Why didn't the B -> A sync happen? I want both computers to always have the exact same folder content, no matter which machine that content originated from.