elseif ((Tools::isSubmit('submitEditShipping') && isset($order)){ // тут обновляете заказ .... $order->update(); Tools::redirectAdmin(self::$currentIndex.'&id_order='.$order->id.'&vieworder&conf=4&token='.$this->token);}
<button type="submit" class="btn btn-default" name="submitShippingNumber"> <i class="icon-ok"></i> {l s='Update'}</button>