Deploying a domain - dealing with Microsoft Accounts

Hi all!

In June, we'll finally be deploying an Active Directory domain where I work.  All of the local machines are running Windows 8.1, and all of the users are signing on using Microsoft accounts (which are simply company E-mail addresses).  I've read about Windows Easy Transfer being used to migrate local accounts to domain accounts.  Is there a way to do the same for Microsoft Accounts, or will I need to start from scratch with user accounts (backing up and restoring documents, etc.)?