diff --git a/archreview/plans/PLAN-04-data-audit-backbone.md.tasks.json b/archreview/plans/PLAN-04-data-audit-backbone.md.tasks.json
index d49f221e..ff12a232 100644
--- a/archreview/plans/PLAN-04-data-audit-backbone.md.tasks.json
+++ b/archreview/plans/PLAN-04-data-audit-backbone.md.tasks.json
@@ -16,9 +16,9 @@
     { "id": 13, "subject": "Task 13: Audit row for operator Retry on parked notifications", "status": "completed", "blockedBy": [] },
     { "id": 14, "subject": "Task 14: Operator identity on the SiteCalls Retry/Discard relay", "status": "completed", "blockedBy": [13] },
     { "id": 15, "subject": "Task 15: Composite keyset in the SiteCalls reconciliation pull contract (site side)", "status": "completed", "blockedBy": [] },
-    { "id": 16, "subject": "Task 16: Central keyset cursor — un-pin the SiteCalls reconciliation loop", "status": "pending", "blockedBy": [15] },
-    { "id": 17, "subject": "Task 17: Durable record for permanently-abandoned reconciliation rows", "status": "pending", "blockedBy": [] },
-    { "id": 18, "subject": "Task 18: Reconciliation NodeB failover (owned from report 08)", "status": "pending", "blockedBy": [] },
+    { "id": 16, "subject": "Task 16: Central keyset cursor — un-pin the SiteCalls reconciliation loop", "status": "completed", "blockedBy": [15] },
+    { "id": 17, "subject": "Task 17: Durable record for permanently-abandoned reconciliation rows", "status": "completed", "blockedBy": [] },
+    { "id": 18, "subject": "Task 18: Reconciliation NodeB failover (owned from report 08)", "status": "completed", "blockedBy": [] },
     { "id": 19, "subject": "Task 19: Batch the KpiSample purge", "status": "pending", "blockedBy": [] },
     { "id": 20, "subject": "Task 20: NotificationOutbox KPI — single-query aggregation, bounded oldest", "status": "pending", "blockedBy": [] },
     { "id": 21, "subject": "Task 21: OPTION (RECOMPILE) on the SiteCalls catch-all query", "status": "pending", "blockedBy": [11] },
@@ -28,5 +28,5 @@
     { "id": 25, "subject": "Task 25: Bounded parallel notification delivery", "status": "pending", "blockedBy": [13] },
     { "id": 26, "subject": "Final verification: full solution build + test sweep (infra up for MSSQL suites)", "status": "pending", "blockedBy": [3, 8, 9, 10, 12, 14, 18, 19, 20, 21, 22, 23, 24, 25] }
   ],
-  "lastUpdated": "2026-07-09 (Batch 5: Tasks 13-15 completed)"
+  "lastUpdated": "2026-07-09 (Batch 6: Tasks 16-18 completed)"
 }