Ketika update ada 1 record yang tidak muncul

Kenapa ada satu kolom yang tidak muncul ketika sudah di update, padahal di simpan_edit sudah ada script untuk memanggil record itu?

ini script simpan_edit.php

<?php
include 'config/koneksi.php';
if (isset($_POST['novisitor'])) {

    $id = $_POST['novisitor'];
    $date = $_POST['date'];
    $datekeluar = $_POST['datekeluar'];
    $guess = $_POST['guess'];
    $company = $_POST['company'];
    $reasonforvisit = $_POST['reasonforvisit'];
    $meetwithemployee = $_POST['mid'];
    $ktpnumber = $_POST['ktpnumber'];
    $passpor = $_POST['passpor'];
    $sim = $_POST['sim'];
    $npwp = $_POST['npwp'];
    $asuransikesehatan = $_POST['askes'];
    $phonenumber = $_POST['phonenumber'];

    if ($datekeluar){
        $query = "UPDATE book_appointment2 SET
                                        novisitor ='$novisitor',
                                        date = '$date',
                                        datekeluar = '$datekeluar',
                                        guess = '$guess',
                                        company = '$company',
                                        reasonforvisit = '$reasonforvisit',
                                        meetwithemployee = '$meetwithemployee',
                                        ktpnumber = '$ktpnumber',
                                        passpor = '$passpor',
                                        sim = '$sim',
                                        npwp = '$npwp',
                                        asuransikesehatan = '$asuransikesehatan',
                                        phonenumber = '$phonenumber'
                WHERE guess='$id'";
        $add = mysqli_query($koneksi, $query);
        echo var_dump($add);
        if($add){
        header("location:crud_table2.php");
        }
    }
}