cptr_save

function cptr_save() {
    global $post_ID;

    if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE ) return;
    if (!isset($_POST['myplugin_noncename'])) return;
    if (!wp_verify_nonce( $_POST['myplugin_noncename'], plugin_basename(__FILE__))) return;
    if (!current_user_can( 'edit_post', $post_ID ) ) return;

    $id = $_POST['post_ID'];
    $related = isset($_POST['reladded']) ? $_POST['reladded'] : array();
    update_post_meta($id, CI_CPTR_POST_RELATED, $related);


    // this is where I attempt to update the post_type

        //Get a list of post IDs
       foreach ($related as $rel_id) {
        $my_post = array( 'id' => $rel_id, 'post_status' => 'publish');
        wp_update_post( $my_post );
       }

}