Changes that affect migration

Changes are listed that affect the migration of a queue manager to the current release of IBM® MQ, or that affect existing applications or configurations.
Review the list of changes before upgrading queue managers to the latest product version. Decide whether you must plan to make changes to existing applications, scripts, and procedures before starting to migrate your systems.
Note:

Distributed[IBMi]On distributed platforms, you cannot reverse queue manager migration to remove the effect of changes.

[z/OS]On z/OS®, you can reverse queue manager migration as long as you have not enabled new function. You enable new function by setting the OPMODE parameter to (NEWFUNC, 800).

Changes for IBM MQ Version 8.0

For details of all changes in this release, including those that affect migration, see What's changed in IBM MQ 8.0 .

Changes in earlier releases

For information about what changed in an earlier release of the product, see the What's changed section in the product documentation for that release:

For older, out of support, versions of the product, the documentation is not available in the online IBM Documentation, but is available for you to download for offline use. For more information, see Documentation for older versions of IBM MQ.