WDMYCLOUDMIRROR and ACTIVE DIRECTORY

Hello for everyone. I have one big problem. In my office we need to integrate wd my cloud to active directory. And I have a question. After integration wil be accessible user folders that was created before? And can i use old user accounts or only domain accounts useable?

I don’t believe that the My Cloud Mirror can use Active Directory. At least some of the EX and PR series do, though.