Transfer of local terminal users to the domain?

Question

Active Directory

It so happened that there is a terminal server on Windows 2012R2 with about 50+ users not in the domain. The number of users is growing and managing them is becoming increasingly difficult. It was decided to switch to AD.
I googled and found these articles:

• Time - there for 2003 (not sure about relevance)
  
• Two is not exactly the same. There is a transfer on the local machine (and somehow it is written intricately, while reading I was completely confused by "something")
  
• Here - close, but not that.
  

The network diagram is

scheme

Machines in branches not in the domain and it is not supposed. The domain will only have a terminal server.
Actually the question is: what is the least painless way for employees to transfer their existing local accounts on the terminal server to the domain? If this is of course possible.
PS. if any tutorial - then finally cool. Well, or on the fingers of the general stages at least.

Answer 1

If you do not need to transfer user profiles, then deploy AD according to the official manuals. Include a terminal server in the domain, create users (the process can be easily automated using PowerShell), set up the necessary GPOs, correctly delete old user profiles and go under the account of domain users. The settings of some programs, for example the same 1C, can be transferred by simply copying directories and a registry branch.
If you want to transfer local user profiles to domain ones, then instead of deleting old profiles, you need to transfer them, which is actually done in article Two .