Deleted VNA gateway and now have groups referenced by ID in group rules
Release : 20.2, 21.2
Component : Virtual Network Assurance For CA Performance Management
Removing the VNA gateway would remove any groups, sites, domains, etc that come from that gateway.
Even if re added, new IDs are assigned to al the items when readded.
Recreate the group rules with the new groups if present, also update any reports/dashboards/views with the new groups/items as needed.