Duplicate perspectives are seen in the VNA inventory due to an IP change in the engine configuration, this may lead to VNA items not being deleted from the VNA inventory.
Release : 21.2
Component : Virtual Network Assurance For CA Performance Management
Defect: DE519923
The fix for this issue is currently targeted for CA Performance Management 21.2.7.
Note that this is subject to change and there are no release dates that can be provided at this time.