为什么克隆的值不会保存在DB中？对于第一行（不是克隆的那一行），它工作得很好，但当我使用jQuery（.clone）添加新值时，新添加的值不会保存。。。

jQuery

$(\'#add-embed\').on(\'click\', function() {
    var row = $(\'.empty-row\').clone(true);
        row.removeClass(\'empty-row\').addClass(\'entries\');
        row.insertBefore(\'#repeater > div:last\');
    return false;
});

<div id="repeater">
    <div class="entries">
        <input type="text" name="al_ttl[]">
        <input type="text" name="al_tmp[]">
    </div>
    <div class="empty-row">
        <input type="text" name="al_ttl[]">
        <input type="text" name="al_tmp[]">
    </div>
</div>

function frontend_submit() {
    global $current_user, $post;

    if ( \'POST\' == $_SERVER[\'REQUEST_METHOD\']
        && !empty( $_POST[\'action\'] )
        && $_POST[\'action\'] == \'post\' ) {

        //Global Post
        $post_id        = $post->ID;
        $user_id        = $current_user->ID;
        $post_title     = $_POST[\'post_title\'];


        $post_id = wp_insert_post(array(
            \'post_author\'   => $user_id,
            \'post_title\'    => $post_title,
            \'post_status\'   => \'publish\',
            \'post_type\'     => \'test\'
        ));


        //Data Rows Save
        $old = get_post_meta($post_id, \'data_rows\', true);
        $new = array();
        $ah_ttl = $_POST[\'al_ttl\'];
        $ah_tmp = $_POST[\'al_tmp\'];
        $count = count( $ah_ttl );
        for ( $i = 0; $i < $count; $i++ ) {
            if ( $ah_ttl[$i] != \'\' ) :
                $new[$i][\'al_ttl\'] = stripslashes( strip_tags( $ah_ttl[$i] ) );
                $new[$i][\'al_tmp\'] = stripslashes( $ah_tmp[$i] );

            endif;
        }

        if ( !empty( $new ) && $new != $old )
            update_post_meta( $post_id, \'data_rows\', $new );
        elseif ( empty($new) && $old )
            delete_post_meta( $post_id, \'data_rows\', $old );

        }

}
do_action(\'wp_insert_post\', \'frontend_submit\');