When upgrading HCS for Contact Center 8.x to HCS for Contact Center 9.0 the contents of the multiple stacks must be consolidated into the single Unified CCDM instance. You cannot automatically consolidate the multiple Unified CCMP instances as this could cause duplicate database records for Unified CCMP specific data. However, because Unified CCMP/Unified CCDM is a closed loop provisioning platform designed to operate in brownfield sites then the core equipment configuration for each instance can be automatically imported from the underlying Cisco equipment.
The following Unified CCMP specific information will be lost in the migration process:
- Unified CCMP Users
- Audit Records
- Resource Change History
You can manually recreate the first three of these items (Unified CCMP Users, Groups, and Folders) in the system after you complete the migration steps outlined in Migration Procedure. You cannot recreate the Audit Records and Resource Change History. These records and history will be permanently lost.