Need help with Active Directory Migration - (terminal server portion with multiple domain profiles)

Two domains

Domain A currently has the following:

Terminal Server:  (over 150 users login to this server)

Domain B is where I need to migrate this to.  Here is where the problem is.  I would normally use ADMT and have it create the user accounts on the new domain and turn on SID history.  The problem with that is the users ALREADY have accounts in Domain B.

Is there a way to move a SID from a user account in DOMAIN A to an existing user account in DOMAIN B?

My end goal is for the user to not have a new profile created the first time they login to the terminal server on the new domain.  This is part of ADMT user profile migration but I'm not sure how to do this considering the user accounts are already created and active on the DOMAIN B.
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If user accounts are already exists on target domain same as source, you can migrate those accounts in merger mode with ADMT

This will instate SID-History in those accounts and you are good to go with terminal server migration

Note that source user password will get overwrite on target account
Also for merged accounts in target domain you need to change upn suffix to match to target domain

Check below post

You can select user accounts from GUI as well and included file is optional

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ITNCAuthor Commented:
Thanks.  I will look into this and get back with you. Probably be a couple of days.
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Windows Server 2008

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