RDS 2019 - Neuinstallation + Übernahme Userfiles alter RDS

$sourceServer = "RdServer"  
$localProfilePath = "\\$sourceServer\C$\Users"  
$updPath = "\\fileServer\updShare\"  
$forUseOnSourceServer = $true  #UPD being set up is for same server that local profile was on

$templateUpd = "$updPath\UVHD-template.vhdx"  
write-host " "  
write-host "   ╔════════════════════════════════════════════════════════╗ " -ForegroundColor Yellow  
write-host "   ║                                                        ║ " -ForegroundColor Yellow  
write-host "   ║        This script must be ran as Administrator        ║ " -ForegroundColor Yellow  
write-host "   ║                                                        ║ " -ForegroundColor Yellow  
write-host "   ╚════════════════════════════════════════════════════════╝ " -ForegroundColor Yellow  
write-host " "  
timeout.exe 15

#try to determine users from local profiles
$profileFolders = @(get-childitem -Path $localProfilePath -Directory | Out-GridView -Title "Select Profiles to copy to UPD" -PassThru)  

foreach($folder in $profileFolders)
{
    $name= $folder.name
    #try to find user account for the name
    write-host "__________________________________________________________________"  
    write-host "Profile folder $name" -ForegroundColor Cyan   
    
    $user = @(Get-ADUser $name -Properties objectSid)
    $sid = $user.objectSid
    if($sid)
    {
        $userUpd = "$updPath\UVHD-$sid.vhdx"  
        #see if UPD already exists
        if(test-path $userUpd)
        {
            #upd already exists
            Write-Host "Found UPD for $name - $sid" -ForegroundColor Cyan  
        }
        else {
            #UPD does not exist, copy template to new file
            Write-Host "Make UPD for $name - $sid" -ForegroundColor Cyan  
            Copy-Item -Path $templateUpd -Destination $userUpd
            timeout 5
        }
        #mount UPD for copying data
        write-host "Mount vhd for $name" -ForegroundColor Cyan  
        $disk = Mount-DiskImage -ImagePath $userUpd
        # create a new signature
        $randomSignature = [uint32](Get-Random -Maximum ([uint32]::MaxValue))
        $disk | Set-Disk -Signature $randomSignature
        #get drive letter
        $Drive = Get-Partition (Get-DiskImage -ImagePath $userUpd).Number | Get-Volume
        $drivePath = $Drive.DriveLetter + ":\"  
        Write-Host ("Drive path is " + $drivePath)  
        timeout 5
        #now run robocopy from old profile path to new UPD path
        write-host "Copy $($folder.fullname) to $drivePath"  
        timeout -seconds 5
        robocopy "$($folder.fullname)" $drivePath /copy:datso /r:0 /mt:64 /xj /xo /fft /xd "Application Data*" "Code Cache" /s /z  

        #dismount before continuing
        write-host "dismount vhd for $name " -ForegroundColor Cyan  
        Dismount-DiskImage -ImagePath $userUpd
        if($forUseOnSourceServer)
        {
            write-host "rename $($folder.fullname) folder " -ForegroundColor Cyan  
            Rename-Item -path $folder.fullname -newname ($folder.fullname + "-Copied")  
            #clear the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\{SID} key by renaming it
            write-host "rename ProfileList Registry Key " -ForegroundColor Cyan  
            Invoke-Command -ComputerName $sourceServer -ArgumentList $sid -ScriptBlock {  param($sid); Rename-Item -Path "HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\$sid" -NewName ($sid + "-OLD") }  
        }
        timeout 5
    }
}