Migrate Printer from old Print Server to new Print Server with Powershell, maintain Default Printer.

MigratePrinter.ps1

$Printers = Get-WmiObject win32_printer

$oldPrintserver = "OLD_PRINTSERVER_HOSTNAME"
$newPrintserver = "NEW_PRINTSERVER_HOSTNAME"

foreach($oldPrinter in $Printers) {
    Write-Host "Bearbeite Drucker: "$oldPrinter.Name
    #if( $oldPrinter.Name.StartsWith("Microsoft XPS Document Writer") -Or $oldPrinter.Name.StartsWith("Fax") -Or $oldPrinter.Name.StartsWith("An OneNote 2010 Senden") ) {
    #    Write-Host "Lösche Drucker: "$oldPrinter.Name
    #    $oldPrinter.PSBase.Delete()
    #}

    if( $oldPrinter.Name.StartsWith("\\$oldPrintserver") ) {
        Write-Host "Migriere Drucker: "$oldPrinter.Name
        $pos = $oldPrinter.Name.LastIndexOf("\")
        $PrinterHost = $oldPrinter.Name.Substring(0, $pos)
        $PrinterName = $oldPrinter.Name.Substring($pos+1)

        Write-Host "Verbinde Drucker \\$newPrintserver\$PrinterName"

        $WMIPrinter = [WMIClass]"\\.\root\cimv2:Win32_Printer"
        $res = $WMIPrinter.AddPrinterConnection("\\$newPrintserver\$PrinterName")

        $newPrinter = Get-WMIObject -query "Select * From Win32_Printer Where Name = '\\\\$newPrintserver\\$PrinterName'";

        if($newPrinter) {
          if($oldPrinter.Default) {
            Write-Host "Setzte Standarddrucker: \\$newPrintserver\$PrinterName"
            $newPrinter.SetDefaultPrinter()
          }

          Write-Host "Lösche Drucker: "$oldPrinter.Name
          $oldPrinter.Delete()
        }else{
          Write-Host "Fehler beim Verbinden. "$oldPrinter.Name" wurde nicht gelöscht."
        }
     }
}

Write-Host "Press any key to continue ..."
$x = $host.UI.RawUI.ReadKey("NoEcho,IncludeKeyDown")