Domain migration with GUID

I will do a domain migration in the near future, and I just want to be as sure as I can about not running into trouble.

Is there any special steps I should include or be aware of so that I do not have to join the workstations into the new domain? With user migration I am under the assumption that GUID will follow accounts. How will this work? If I migrate accounts and have both (virtual) servers running, do I automaticly find the new domain on workstations login?

A step-by-step or best practices would be nice as I did not find anything like this, just spesific information about the tools needed.
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I can help you with this ^^

Recently i migrated 600 computers from 18 domains to one.

Your friend in this work is Microsoft Active Directory Migration Tool v3.0

The process are simple:

Make a trusted relation between domains (if not are a child domains from parent) and install ADMT on both DCs, child and parent.

Install and configure PES (Password Extraction Server) (comes with ADMT), this tool allow you export the passwords for the user accounts.

Now with ADMT wizard move the users from old domain to new.

In this point, the users can still login in the computer with the same profiles but need select the new domain in login screen.

Finaly migrate the computers with ADMT from old to new domain.

One reboot and the computers, with users profiles and same configurations will be migrated to the new domain.

Clean and easy.

Good Luck ;)

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