WebSphere Message Broker Version 6.0 can coexist with previous versions and other products. This topic explains the conditions that apply when you use a Version 5.0 broker in a Version 6.0 broker domain.
After migration, a Version 5.0 broker can continue to use the same WebSphere MQ queue manager, with the same WebSphere MQ configuration, and with the same release and service level of the WebSphere MQ product code, as it did before migration.
Except for user-defined extensions and mapping files, you do not need to perform any tasks to migrate your development and deployment resources, such as message flow files, message set definition files, ESQL files, XML Schema files, and broker archive files. You can just start using these resources with WebSphere Message Broker Version 6.0. When you have migrated Version 5.0 mapping files (.mfmap) to Version 6.0 mapping files (.msgmap) using the mqsimigratemfmaps command, edit them in the Version 6.0 Message Brokers Toolkit.
It is not possible to preserve a WebSphere MQ Event Broker broker at the Version 5.0 level of code when you migrate a WebSphere Business Integration Event Broker Version 5.0 broker domain to a Version 6.0 broker domain.
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