Migrate a large domain that contains many components and extends over many computers.
On a large domain, you might not be able to migrate all components at the same time. In this situation, you can split the migration of the components, for example:
The migration order is flexible because Version 6.1 components can coexist with Version 5.0 components within a single domain. However, coexistence does enforce some restrictions. In particular, these restrictions will affect you if you plan to stagger the migration of several instances of the Message Broker Toolkit, because some files cannot be read using Message Broker Toolkit Version 5.0 or Version 5.1 after they have been saved using Message Broker Toolkit Version 6.1. See Coexistence with previous versions and other products for more information.
Before you start to perform migration, back up your resources.