So in a thread on Microsoft Social. A user asked for help moving users to a directory after they had logged on to a Windows 7 workstation. This is my suggestion.

So first lets create a list of who has logged on to the new platform. A simple script that saves a file with the name of the logged in user in a folder. We will then execute this using Task Scheduler on logon or logon script of the user. Remember to grant rights for all users to create files in that share.

$LoggedOnUserFolder = '\\server\share$'
$UserFile = $LoggedOnUserFolder+'\'+$env:username
if ((Test-Path $UserFile) -eq $False)
{
  New-Item -Type File $UserFile |Out-Null
}

So now we have a share with files of all users that has logged on. Lets do something with them.

#where should all the users be?
$NewUserPath = 'OU=Organizational Unit,DC=example,DC=com'
#Where are the files from the clients?
$LoggedOnUserFolder = '\\server\share$'
#Do a simple array of usernames
$Usernames = Get-ChildItem $LoggedOnUserFolder |Select-Object -ExpandProperty Name
#Get all users and move those that are on the list and moved.
Get-ADUser -Filter * | Where {$userNames -contains $_.samaccountname -and $_.DistinguishedName -notlike "*$NewUserPath"}| Move-ADObject -TargetPath $NewUserPath

Make sure that the source path is correct. Otherwise you can trick the system to migrate other users. So after running the second script we have moved the users.. Yeay.