diff --git a/archreview/plans/R2-04-failure-visibility-plan.md.tasks.json b/archreview/plans/R2-04-failure-visibility-plan.md.tasks.json
index 260ece96..df8e7382 100644
--- a/archreview/plans/R2-04-failure-visibility-plan.md.tasks.json
+++ b/archreview/plans/R2-04-failure-visibility-plan.md.tasks.json
@@ -9,7 +9,7 @@
     { "id": "T5", "subject": "Galaxy internal IMxWriteOps seam under GatewayGalaxyDataWriter (sealed SDK session untestable) (06/S-1)", "status": "completed", "blockedBy": [] },
     { "id": "T6", "subject": "Galaxy fail-closed write on AdviseSupervisory failure -> BadCommunicationError, no raw write", "status": "completed", "blockedBy": ["T5"] },
     { "id": "T7", "subject": "Galaxy counters galaxy.writes.advise_failed + galaxy.writes.unconfirmed (empty-statuses Good metered)", "status": "completed", "blockedBy": ["T6"] },
-    { "id": "T8", "subject": "Galaxy skip-gated live smoke: normal advised write still returns Good post-change", "status": "pending", "blockedBy": ["T6"] },
+    { "id": "T8", "subject": "Galaxy skip-gated live smoke: normal advised write still returns Good post-change", "status": "completed", "blockedBy": ["T6"] },
     { "id": "T9", "subject": "PrimaryGatePolicy pure class + truth-table tests + otopcua.redundancy.primary_gate_denied counter (03/S4)", "status": "pending", "blockedBy": [] },
     { "id": "T10", "subject": "Wire DriverHostActor gates (:977/:1039/:1095) through PrimaryGatePolicy with member-count provider + S5 log-once", "status": "pending", "blockedBy": ["T9"] },
     { "id": "T11", "subject": "DriverHostActorPrimaryGateTests: deny-on-unknown multi-node, allow single-node, ack/emit variants, meter tags", "status": "pending", "blockedBy": ["T10"] },
diff --git a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Tests/Runtime/GatewayGalaxyLiveReopenAndWriteTests.cs b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Tests/Runtime/GatewayGalaxyLiveReopenAndWriteTests.cs
index f2a3cb1e..95a2e68c 100644
--- a/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Tests/Runtime/GatewayGalaxyLiveReopenAndWriteTests.cs
+++ b/tests/Drivers/ZB.MOM.WW.OtOpcUa.Driver.Galaxy.Tests/Runtime/GatewayGalaxyLiveReopenAndWriteTests.cs
@@ -173,6 +173,34 @@ public sealed class GatewayGalaxyLiveReopenAndWriteTests
             $"borrow smoke: subscribed {WriteRef} -> handle {match.ItemHandle}; borrowed write Good with AddItemCallCount=0; control AddItemCallCount=1");
     }
 
+    /// <summary>
+    ///     archreview 06/S-1 guard — after the fail-closed advise change, a NORMAL advised no-login write
+    ///     must STILL return Good (0). Guards against over-eager fail-closing: the advise round-trip succeeds
+    ///     on a healthy gateway, so the raw Write proceeds and commits. If this ever returns Bad on a healthy
+    ///     gateway, the fail-closed branch is mis-judging a successful advise. Skip-gated like the others.
+    /// </summary>
+    [Fact]
+    public async Task Live_normal_advised_write_still_returns_good_under_failclosed_advise()
+    {
+        var (endpoint, apiKey) = RequireLiveGatewayOrSkip();
+        var ct = TestContext.Current.CancellationToken;
+        var clientOptions = BuildClientOptions(endpoint, apiKey);
+
+        await using var session = new GalaxyMxSession(new GalaxyMxAccessOptions(ClientName: "OtOpcUaFailClosedGuard"));
+        await session.ConnectAsync(clientOptions, ct);
+        var writer = new GatewayGalaxyDataWriter(session, writeUserId: 0);
+
+        var result = await writer.WriteAsync(
+            [new WriteRequest(WriteRef, 5151.0f)], _ => SecurityClassification.FreeAccess, ct);
+
+        result.ShouldHaveSingleItem().StatusCode.ShouldBe(0u,
+            "a normal advised write must still return Good after the fail-closed advise change (no over-eager fail-close)");
+        writer.CachedSupervisedHandleCount.ShouldBe(1, "the healthy advise should have supervised the handle");
+
+        TestContext.Current.SendDiagnosticMessage(
+            $"fail-closed guard smoke: normal advised write {WriteRef}=5151 returned Good; handle supervised");
+    }
+
     private static (string Endpoint, string ApiKey) RequireLiveGatewayOrSkip()
     {
         var endpoint = Environment.GetEnvironmentVariable("MXGW_ENDPOINT");