Reconcile promotion and manifest documentation

docs/operations.md

@@ -127,6 +127,12 @@ The directory is immutable once promoted. Configured lanes become
 the bundle and `index.json` are retained for audit and resume validation but
 are not selectable or published implicitly.
 
+Starting a replacement clears the previous extraction payload from the current
+session-stage record. If that replacement fails or self-skips, the current
+record does not fall back to the earlier outputs. The earlier run manifest and
+immutable bundle remain available for inspection, but downstream resolution
+requires a new current successful extraction record.
+
 Atomic Notarius bundle promotion is supported on Linux, macOS, and Windows.
 On other operating systems, extraction fails before copying the bundle into a
 temporary promotion tree because Narratio has no verified atomic no-replace