Inherit the custom permalink from original page

/**
 * Inherit the custom permalink from original page
 */
function pm_inherit_permalinks($default_uri, $post_name, $post, $slug, $native_uri) {
    global $sitepress, $permalink_manager_uris;

    // Do not change native permalinks or posts assigned to another categories
    if(($native_uri == true) || empty($post_name) || empty($post->ID)) { return $default_uri; }

    // Check if WPML plugin is enabled
    if(is_object($sitepress)) {
        // Get default language
        $def_lang = $sitepress->get_default_language();

        // Get original ID
        $original_id = apply_filters('wpml_object_id', $post->ID, $post->post_type, false, $def_lang);

        // Get original custom permalink
        $default_uri = (!empty($permalink_manager_uris[$original_id])) ? $permalink_manager_uris[$original_id] : $default_uri;
    }

    return $default_uri;
}
add_filter('permalink_manager_filter_default_post_uri', 'pm_inherit_permalinks', 999, 5);