Index: branches/RC/core/units/user_groups/user_groups_dbitem.php
===================================================================
diff -u -r8929 -r9230
--- branches/RC/core/units/user_groups/user_groups_dbitem.php	(.../user_groups_dbitem.php)	(revision 8929)
+++ branches/RC/core/units/user_groups/user_groups_dbitem.php	(.../user_groups_dbitem.php)	(revision 9230)
@@ -1,6 +1,6 @@
 <?php
 
-	class UserGroups_DBItem extends kDBItem 
+	class UserGroups_DBItem extends kDBItem
 	{
 		/**
 		* Returns part of SQL WHERE clause identifing the record, ex. id = 25
@@ -14,7 +14,7 @@
 		*/
 		function GetKeyClause($method=null, $keys_hash = null)
 		{
-			$table_info = $this->getLinkedInfo($this->Special);
+			$table_info = $this->getLinkedInfo($this->Special, true);
 			if ($table_info) {
 				// we have parent info, then use it
 				$keys_hash = Array(
@@ -24,7 +24,7 @@
 			}
 			return parent::GetKeyClause($method, $keys_hash);
 		}
-		
+
 	}
 
 
Index: branches/RC/core/kernel/kbase.php
===================================================================
diff -u -r9027 -r9230
--- branches/RC/core/kernel/kbase.php	(.../kbase.php)	(revision 9027)
+++ branches/RC/core/kernel/kbase.php	(.../kbase.php)	(revision 9230)
@@ -625,9 +625,10 @@
 	 *
 	 * @param bool $from_temp load parent item from temp table
 	 * @param string $special special of main item
+	 * @param bool $guess_special if object retrieved with specified special is not loaded, then try not to use special
 	 * @return Array
 	 */
-	function getLinkedInfo($special = '')
+	function getLinkedInfo($special = '', $guess_special = false)
 	{
 		$parent_prefix = $this->Application->getUnitOption($this->Prefix, 'ParentPrefix');
 		if($parent_prefix)
@@ -647,7 +648,12 @@
 				$table_info['ParentTableKey'] = getArrayValue($table_info, 'ParentTableKey', $parent_prefix);
 			}
 
-			$main_object =& $this->Application->recallObject($parent_prefix.'.'.$special);
+			$main_object =& $this->Application->recallObject($parent_prefix.'.'.$special, null, Array ('raise_warnings' => 0));
+			/* @var $main_object kDBItem */
+
+			if (!$main_object->isLoaded() && $guess_special) {
+				$main_object =& $this->Application->recallObject($parent_prefix);
+			}
 			return array_merge($table_info, Array('ParentId'=> $main_object->GetDBField( $table_info['ParentTableKey'] ) ) );
 		}
 		return false;