domain" on page 133. You must restore the following components to return to the previous level: The Configuration Manager Brokers The User Name Server Workspace User profile and Open Database Connectivity (ODBC) connection file The following sections discuss the detailed restoration procedure for each component. Important: You cannot restore components to their WebSphere MQ Integrator V2.1 level with the mqsimigratecomponents command provided in WebSphere Message Broker V6.0. This command restores WebSphere Message Broker V6.0 components only to WebSphere Business Integration Message Broker V5.0 level. Any changes made in the WebSphere Message Broker V6.0 environment since migration are lost when you restore to the previous level. We recommend that you carefully review the impact of restoring before embarking on the changes.