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Index: db_event_handler.php
===================================================================
--- db_event_handler.php	(revision 13861)
+++ db_event_handler.php	(working copy)
@@ -1076,11 +1076,17 @@
 		 * @param string $variable_name
 		 * @param string $variable_value
 		 */
-		function setListSetting(&$event, $variable_name, $variable_value)
+		function setListSetting(&$event, $variable_name, $variable_value = null)
 		{
 			$view_name = $this->Application->RecallVar($event->getPrefixSpecial() . '_current_view');
 //			$this->Application->StoreVar($event->getPrefixSpecial() . '_' . $variable_name, $variable_value, true); //true for optional
-			$this->Application->StorePersistentVar($event->getPrefixSpecial() . '_' . $variable_name . '.' . $view_name, $variable_value, true); //true for optional
+
+			if ( isset($variable_value) ) {
+				$this->Application->StorePersistentVar($event->getPrefixSpecial() . '_' . $variable_name . '.' . $view_name, $variable_value, true); //true for optional
+			}
+			else {
+				$this->Application->RemovePersistentVar($event->getPrefixSpecial() . '_' . $variable_name . '.' . $view_name);
+			}
 		}
 
 		/**
@@ -1244,10 +1250,10 @@
 		 */
 		function OnResetSorting(&$event)
 		{
-			$this->Application->RemoveVar($event->Prefix_Special.'_Sort1');
-			$this->Application->RemoveVar($event->Prefix_Special.'_Sort1_Dir');
-			$this->Application->RemoveVar($event->Prefix_Special.'_Sort2');
-			$this->Application->RemoveVar($event->Prefix_Special.'_Sort2_Dir');
+			$this->setListSetting($event, 'Sort1');
+			$this->setListSetting($event, 'Sort1_Dir');
+			$this->setListSetting($event, 'Sort2');
+			$this->setListSetting($event, 'Sort2_Dir');
 		}
 
 		/**