U-Tools: Unique Tools for Windows System Administrators
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Dcpromo Not Necessary for Cloning

Dcpromo.exe is the Microsoft utility that promotes a new Windows Server to run as an Active Directory domain controller. (On Windows Server 2012-2022 the PowerShell cmdlets Install-ADDSForest, Install-ADDSDomain, and Install-ADDSDomainController replace Dcpromo.exe.)

When you prepare the destination computer for cloning AD, it is not necessary to run Dcpromo.

If you run Dcpromo it will attempt to create a new unrelated domain controller.

If you run Dcpromo on an isolated network, you will create an unwanted new domain controller and/or a new forest.

This is not harmful; it will simply take longer to clone AD. U-Move will overwrite the redundant information that Dcpromo created.