diff -uNrp zabbix-2.0.4.orig/frontends/php/api/classes/CTrigger.php zabbix-2.0.4/frontends/php/api/classes/CTrigger.php
--- zabbix-2.0.4.orig/frontends/php/api/classes/CTrigger.php	2012-12-08 20:09:20.000000000 +0900
+++ zabbix-2.0.4/frontends/php/api/classes/CTrigger.php	2013-04-02 08:15:58.817370472 +0900
@@ -1278,6 +1278,114 @@ class CTrigger extends CTriggerGeneral {
 		return array('triggerids' => zbx_objectValues($triggers, 'triggerid'));
 	}
 
+	private function copy_trigger($oldid) {
+		/* select * from triggers where triggerid=$oldid; */
+		$item = DBselect('select * from triggers where triggerid='.$oldid);
+		$tr = DBfetch($item);
+		$newids = DB::insert('triggers', array(array(
+			'expression' => $tr['expression'],
+			'description' => $tr['description'],
+			'url' => $tr['url'],
+			'status' => $tr['status'],
+			'value' => $tr['value'],
+			'priority' => $tr['priority'],
+			'lastchange' => $tr['lastchange'],
+			'comments' => $tr['comments'],
+			'error' => $tr['error'],
+			'templateid' => $tr['templateid'],
+			'type' => $tr['type'],
+			'value_flags' => $tr['value_flags'],
+			'flags' => $tr['flags']
+		)));
+		return $newids[0];
+	}
+
+	private function update_triggerid($oldid) {
+		/* create same trigger, because constraint exists */
+		$newid = $this->copy_trigger($oldid);
+
+		/*
+		  update functions set triggerid=$newid where triggerid=$oldid;
+		  update services set triggerid=$newid where triggerid=$oldid;
+		  update sysmaps_link_triggers set triggerid=$newid where triggerid=$oldid;
+		  update escalations set triggerid=$newid where triggerid=$oldid;
+		  update trigger_discovery set triggerid=$newid where triggerid=$oldid;
+		  update trigger_discovery set parent_triggerid=$newid where parent_triggerid=$oldid;
+		  update trigger_depends set triggerid_up=$newid where triggerid_up=$oldid;
+		  update trigger_depends set triggerid_down=$newid where triggerid_down=$oldid;
+		  update events set objectid=$newid where objectid=$oldid and source=0;
+		 */
+		DB::update('functions', array(
+			'values' => array('triggerid' => $newid),
+			'where'=> array('triggerid' => $oldid)
+		));
+		DB::update('services', array(
+			'values' => array('triggerid' => $newid),
+			'where'=> array('triggerid' => $oldid)
+		));
+		DB::update('sysmaps_link_triggers', array(
+			'values' => array('triggerid' => $newid),
+			'where'=> array('triggerid' => $oldid)
+		));
+		DB::update('escalations', array(
+			'values' => array('triggerid' => $newid),
+			'where'=> array('triggerid' => $oldid)
+		));
+		DB::update('trigger_discovery', array(
+			'values' => array('triggerid' => $newid),
+			'where'=> array('triggerid' => $oldid)
+		));
+		DB::update('trigger_discovery', array(
+			'values' => array('parent_triggerid' => $newid),
+			'where'=> array('parent_triggerid' => $oldid)
+		));
+		DB::update('trigger_depends', array(
+			'values' => array('triggerid_up' => $newid),
+			'where'=> array('triggerid_up' => $oldid)
+		));
+		DB::update('trigger_depends', array(
+			'values' => array('triggerid_down' => $newid),
+			'where'=> array('triggerid_down' => $oldid)
+		));
+		DB::update('events', array(
+			'values' => array('objectid' => $newid),
+			'where'=> array('objectid' => $oldid, 'source' => 0)
+		));
+
+		/* remove original trigger */
+		$this->delete(array($oldid));
+
+		return $newid;
+	}
+
+	private function adjust_down_triggerid(array $up_trig_ids) {
+		/* select triggerid_down from trigger_depends where triggerid_up in ... */
+		$selids = $up_trig_ids[0];
+		for ($i = 1; $i < count($up_trig_ids); $i++) {
+			$selids .= ','.$up_trig_ids[$i];
+		}
+		$ids = DBselect('select triggerid_down from trigger_depends where triggerid_up in ('.$selids.')');
+		$down_trig_ids = array();
+		while ($id = DBfetch($ids)) {
+			array_push($down_trig_ids, $id['triggerid_down']);
+		}
+		if (($num = count($down_trig_ids)) == 0) return;
+
+		for ($i = 0; $i < $num; $i++) {
+			$down_trig_ids[$i] = $this->update_triggerid($down_trig_ids[$i]);
+		}
+
+		$this->adjust_down_triggerid($down_trig_ids);
+	}
+
+	private function adjust_triggerid($oldid) {
+		$newid = $this->update_triggerid($oldid);
+
+		$this->adjust_down_triggerid(array($newid));
+
+		return $newid;
+	}
+
 	/**
 	 * Update triggers.
 	 *
@@ -1299,7 +1402,8 @@ class CTrigger extends CTriggerGeneral {
 		$this->checkInput($triggers, __FUNCTION__);
 		$this->updateReal($triggers);
 
-		foreach ($triggers as $trigger) {
+		for ($i = 0; $i < count($triggers); $i++) {
+			$trigger = $triggers[$i];
 			$this->inherit($trigger);
 
 			// replace dependencies
@@ -1307,6 +1411,17 @@ class CTrigger extends CTriggerGeneral {
 				$this->deleteDependencies($trigger);
 
 				if ($trigger['dependencies']) {
+					foreach ($trigger['dependencies'] as $depTrigger) {
+						if ($trigger['triggerid'] < $depTrigger['triggerid']) {
+							$new_triggerid = $this->adjust_triggerid($trigger['triggerid']);
+							$trigger['triggerid'] = $new_triggerid;
+							$triggers[$i]['triggerid'] = $new_triggerid;
+							break;
+						}
+					}
+				}
+
+				if ($trigger['dependencies']) {
 					$newDeps = array();
 					foreach ($trigger['dependencies'] as $depTrigger) {
 						$newDeps[] = array(