Before you migrate from vRealize Automation 7.x to vRealize Automation 8, you must migrate your source tenants using vRealize Suite Lifecycle Manager.
Tenant Migration involves close coordination between Workspace ONE Access (formerly known as VMware Identity Manager), vRealize Suite Lifecycle Manager, and vRealize Automation. When migrating tenants using vRealize Suite Lifecycle Manager, embedded VMware Identity Manager data in vRealize Automation 7 is migrated to the Global Environment of VMware Identity Manager version 3.3.3 and later. After migrating tenants, you can perform the merge tenant operation in vRealize Automation, in which you migrate vRealize Automation 7 environment to vRealize Automation 8. For more information on adding, deleting, or managing your tenants, refer to the Tenant Management section of the vRealize Suite Lifecycle Manager documentation.