Why is a Security Override not Showing up in a Vault Configuration Report?
Security Overrides for Auto-Managed Groups do not show in Vault Configuration Reports.
Auto-Managed Groups have different naming conventions across different vaults. Due to this, they are not included in migrations as the naming convention difference would cause these migrations to fail. Vault configuration reports exclude security overrides for these groups to more accurately represent Vault migrations.
Vault Help Documentation: Generating Vault Configuration Reports