diff -urN zabbix-2.0.13.org/frontends/php/api/classes/CAction.php zabbix-2.0.13.ZBX-8859/frontends/php/api/classes/CAction.php
--- zabbix-2.0.13.org/frontends/php/api/classes/CAction.php	2014-09-10 18:23:30.000000000 +0900
+++ zabbix-2.0.13.ZBX-8859/frontends/php/api/classes/CAction.php	2014-10-07 14:30:17.000000000 +0900
@@ -947,6 +947,12 @@
 				$operationidsDelete = array_merge($operationidsDelete, array_keys($operationsDb));
 			}
 
+			// if update only conditions / operations, then set status for dummy update
+			$chkFields = array_diff_key($action, ['actionid' => null, 'conditions' => array(), 'operations' => array()]);
+			if (empty($chkFields)) {
+				$action['status'] = $updActions[$action['actionid']]['status'];
+			}
+
 			$actionid = $action['actionid'];
 			unset($action['actionid']);
 			if (!empty($action)) {