Reply To: CPT Title search returns no results

I may have made a typo there, try:

add_filter('asp_results', 'custom_asp_redirect_url', 10, 1);
function custom_asp_redirect_url($results) {
	foreach ( $results as $k => &$r ) {
		$r->link = get_site_url() . '/agent-portal/management/agent-profile-update/?agent_ID=' . $r->id;
	}
	
	return $results;
}