Changes from Version 7.0.1 or later to Version 8.0
All IBM® MQ changes that affect the migration of a queue manager from Version 7.0.1 or later to Version 8.0 are listed.
New capabilities that do not affect existing IBM MQ applications are not listed.
Note:
![[IBMi]](ngibmi.gif)
On distributed platforms, you cannot reverse queue manager migration to remove the effect of changes.
![[z/OS]](ngzos.gif)
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).
Click on a link to read the details about the change.