An admin exports a Vault Configuration Report for all Objects. However, some Signature Objects cannot be found in the report. Example: Audit Signature(audit_sig__sys),Exception Signature (exception_sig__sys). Why is that?
Signature Objects are system-managed and provisioned with the application for specific features. It appears as though configuration changes cannot be made to this object, nor can the configuration be migrated between Vaults for these objects. This is why it is excluded from Vault Configuration Report.
Vault Help Documentation: Generating Vault Configuration Reports