Форум

$order = Order::load($orderId);
$shipmentCollection = $order->getShipmentCollection();
$shipment = $shipmentCollection->getItemById($shipmentId);
$shipment->setField('STATUS_ID', $status);
$order->save();

$shipments = $order->getShipmentCollection();

foreach ($shipments as $shipment)
{
   if(!$shipment->isSystem())
   {
      $shipment->setField('STATUS_ID', $status);
   }
}

$order->save();