Index: upgrades.php
===================================================================
--- upgrades.php	(revision 15447)
+++ upgrades.php	(working copy)
@@ -2230,5 +2230,11 @@
 
 				$this->Conn->doUpdate($fields_hash, $table_name, 'CategoryId = ' . $category_data['CategoryId']);
 			}
+
+			$rebuild_mode = $this->Application->ConfigValue('QuickCategoryPermissionRebuild') ? CategoryPermissionRebuild::SILENT : CategoryPermissionRebuild::AUTOMATIC;
+			$this->Application->SetConfigValue('CategoryPermissionRebuildMode', $rebuild_mode);
+
+			$sql = 'DELETE FROM ' . TABLE_PREFIX . 'SystemSettings WHERE VariableName = "QuickCategoryPermissionRebuild"';
+			$this->Conn->Query($sql);
 		}
 	}
\ No newline at end of file