OneDrive business was added to my team's account. I moved my Documents to the OneDrive folder and it syncs fine (using the new onedrive.exe that comes with Windows 10/Office 2016, not the old groove.exe from Windows 8.1).
Anyway... Create a new Word document and click Share. It asks you to save it to the cloud - saving to the sync folder is not enough, you have to actually search for OneDrive in the save page.
Same thing when opening. If you double-click the document from Explorer on the sync folder it won't allow you to share - you have to open the OneDrive version directly.
Anyway around this? Not a big deal but you have to remember to open the one you know can be shared...