Reconcile promotion and manifest documentation

docs/troubleshooting.md

@@ -152,6 +152,10 @@ Safe fix:
 - correct the reported Notarius pipeline, input, provider, or configuration
   failure and rerun extraction. Do not edit a staged output bundle into place.
 
+After a failed replacement, an older immutable bundle may still exist even
+though the current session manifest has no successful extraction payload. This
+is expected audit state, not a signal to relink the old bundle manually.
+
 Relevant reference: [Operations: Extraction Workflow](./operations.md#extraction-workflow).
 
 ## Atomic Notarius promotion unsupported