Mobile Account sync keeps restoring deleted files
I have set up a macbook on Active Directory, and set it to use mobile accounts. Whenever I make a file on the macbook, it syncs itself to the user's network folder as it should, however if I delete a file from the mac, on the next sync it comes back because for some reason it doesn't sync the deletion to the network folder.
Does anyone have any ideas? Mobile accounts fairly useless if you can't delete files!
MacBook Pro (Retina, 13-inch, Late 2013), OS X Yosemite (10.10.1)