// Fix #PSCFV-4566

controllers/admin/AdminMetaController.php

@@ -455,6 +455,10 @@ class AdminMetaControllerCore extends AdminController
 	{
 		Configuration::updateValue('PS_REWRITING_SETTINGS', (int)Tools::getValue('PS_REWRITING_SETTINGS'));
 		Tools::generateHtaccess($this->ht_file, null, null, '', Tools::getValue('PS_HTACCESS_DISABLE_MULTIVIEWS'));
+
+		Tools::enableCache();
+		Tools::clearCache($this->context->smarty);
+		Tools::restoreCacheSettings();
 	}
 
 	public function updateOptionPsRouteProductRule()