With the release of Win 10, Microsoft totally changed the way Onedrive works Now you selectively sync what you want to see from onedrive to your pc and you cannot access cloud only copies. This is different than 8.x where you could see everything and selectively sync what you wanted on your pc.
So, let's say I have a file on my SP4 named ABC.doc. Are you saying that there's a OneDrive folder on my local hard drive that contains a copy of ABC.doc and, therefore, I have 2 copies of ABC.doc on my SP4? If so, why is the extra copy necessary?