I haven't tested this yet with WPSEO but it might work using the 'wpseo_posts_where' filter to add an additional post status:
function wpjm_include_jobs_in_sitemap( $filter, $type ) {
if ( $type == 'job_listing' ) {
$filter .= ' AND post_status = "expired" ';
}
return $filter;
}
add_filter( 'wpseo_posts_where', 'wpjm_include_jobs_in_sitemap', 10, 2 );You would add something like this to your functions.php template file.
Other than that I'm not sure of a XML sitemap generator that does this out of the box.
Kind Regards,
Scott