To migrate a broker domain from WebSphere MQ Integrator Version 2.1 to WebSphere Business Integration Message Broker with Rules and Formatter Extension Version 5.0, follow the instructions in Migrating from WebSphere MQ Integrator Broker Version 2.1 to WebSphere Business Integration Message Broker Version 5.0, replacing all references to "WebSphere MQ Integrator Broker" with "WebSphere MQ Integrator" and all references to "WebSphere Business Integration Message Broker" with "WebSphere Business Integration Message Broker with Rules and Formatter Extension".
For instructions on how to migrate the New Era of Networks Rules and Formatter support for WebSphere MQ Integrator, see the New Era of Networks documentation.