Index: branches/5.2.x/core/kernel/db/dbitem.php
===================================================================
diff -u -N -r15446 -r15454
--- branches/5.2.x/core/kernel/db/dbitem.php	(.../dbitem.php)	(revision 15446)
+++ branches/5.2.x/core/kernel/db/dbitem.php	(.../dbitem.php)	(revision 15454)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: dbitem.php 15446 2012-07-16 10:53:54Z alex $
+* @version	$Id: dbitem.php 15454 2012-07-16 16:42:50Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -661,11 +661,12 @@
 	 *
 	 * @access public
 	 * @param int $id Primary Key Id to update
+	 * @param Array $update_fields
 	 * @param bool $system_update
 	 * @return bool
 	 * @access public
 	 */
-	public function Update($id = null, $system_update = false)
+	public function Update($id = null, $update_fields = null, $system_update = false)
 	{
 		if ( isset($id) ) {
 			$this->setID($id);
@@ -692,11 +693,15 @@
 
 		$sql = '';
 
-		foreach ($this->FieldValues as $field_name => $field_value) {
+		$set_fields = isset($update_fields) ? $update_fields : array_keys($this->FieldValues);
+
+		foreach ($set_fields as $field_name) {
 			if ( $this->skipField($field_name) ) {
 				continue;
 			}
 
+			$field_value = $this->FieldValues[$field_name];
+
 			if ( is_null($field_value) ) {
 				if ( array_key_exists('not_null', $this->Fields[$field_name]) && $this->Fields[$field_name]['not_null'] ) {
 					// "kFormatter::Parse" methods converts empty values to NULL and for
@@ -726,7 +731,16 @@
 
 		$this->saveCustomFields();
 		$this->raiseEvent('OnAfterItemUpdate');
-		$this->OriginalFieldValues = $this->FieldValues;
+
+		if ( !isset($update_fields) ) {
+			$this->OriginalFieldValues = $this->FieldValues;
+		}
+		else {
+			foreach ($update_fields as $update_field) {
+				$this->OriginalFieldValues[$update_field] = $this->FieldValues[$update_field];
+			}
+		}
+
 		$this->Loaded = true;
 
 		if ( !$this->IsTempTable() ) {