diff --git a/engines/ARIEC61850.lock.json b/engines/ARIEC61850.lock.json
index 51f5571ba..e0c3fa6fc 100644
--- a/engines/ARIEC61850.lock.json
+++ b/engines/ARIEC61850.lock.json
@@ -2,7 +2,7 @@
   "schemaVersion": 1,
   "repository": "masarray/ARIEC61850",
   "ref": "main",
-  "commit": "becda399b4a3ae34831215fc915798b4f846c1be",
-  "sourcePullRequest": 81,
-  "purpose": "Pins the ARIEC61850 engine used by ARSAS. PR #76 preserves unresolved static DataSet members, PR #77 canonicalizes cross-logical-device SCL references, PR #78 keeps one descriptor per static DataSet member while separating resolved runtime primary leaves from the original FCDA/FCD identity, PR #79 projects generic Boolean status structures to scalar stVal while preserving quality/timestamp, PR #80 normalizes validated DataRef-enabled InformationReport ordering, and PR #81 accepts valid zero OptFlds reports while quarantining unmapped canonical report metadata so OptFlds/inclusion/reason fields can never leak into process values."
+  "commit": "9ca4ee490a27046d5d2ffdc21f3614b2d7d58725",
+  "sourcePullRequest": 84,
+  "purpose": "Pins the ARIEC61850 engine used by ARSAS. PR #76 preserves unresolved static DataSet members, PR #77 canonicalizes cross-logical-device SCL references, PR #78 keeps one descriptor per static DataSet member while separating resolved runtime primary leaves from the original FCDA/FCD identity, PR #79 projects generic Boolean status structures to scalar stVal while preserving quality/timestamp, PR #80 normalizes validated DataRef-enabled InformationReport ordering, PR #81 accepts valid zero OptFlds reports while quarantining unmapped canonical report metadata so OptFlds/inclusion/reason fields can never leak into process values, and PR #84 routes exact PrimaryValue residuals through dynamic reporting before MMS polling while preventing quality/timestamp descriptors from hijacking the primary-value fallback."
 }
diff --git a/tests/ARSAS.Tests/Iec61850ReportPlannerRegressionTests.cs b/tests/ARSAS.Tests/Iec61850ReportPlannerRegressionTests.cs
index f66b44bc3..65cb08e4f 100644
--- a/tests/ARSAS.Tests/Iec61850ReportPlannerRegressionTests.cs
+++ b/tests/ARSAS.Tests/Iec61850ReportPlannerRegressionTests.cs
@@ -35,6 +35,36 @@ public void BuildPlans_FastPointWithoutStaticCoverage_BecomesDynamicCandidate()
         Assert.Contains(point, plan.Bindings);
     }
 
+    [Fact]
+    public void BuildPlans_SlowMeasurementWithoutStaticCoverage_BecomesDynamicCandidate()
+    {
+        var device = BuildDevice();
+        var point = BuildSlowMeasurementPoint(device);
+
+        var plans = Iec61850ReportPlanner.BuildPlans(device, new[] { point });
+
+        var plan = Assert.Single(plans);
+        Assert.Equal("Dynamic candidate", plan.Status);
+        Assert.True(plan.AllowDynamicDataSetWrites);
+        Assert.Contains(point, plan.Bindings);
+    }
+
+    [Fact]
+    public void BuildPlans_AllUncoveredPoints_AppearExactlyOnceInDynamicCandidates()
+    {
+        var device = BuildDevice();
+        var fast = BuildFastStatusPoint(device);
+        var slow = BuildSlowMeasurementPoint(device);
+
+        var plans = Iec61850ReportPlanner.BuildPlans(device, new[] { fast, slow });
+
+        Assert.All(plans, plan => Assert.Equal("Dynamic candidate", plan.Status));
+        var bindings = plans.SelectMany(plan => plan.Bindings).ToArray();
+        Assert.Equal(2, bindings.Length);
+        Assert.Single(bindings, point => point.PointKey == fast.PointKey);
+        Assert.Single(bindings, point => point.PointKey == slow.PointKey);
+    }
+
     [Fact]
     public void BuildDynamicFallbackPlans_FastPoint_IsNotExcludedByPollingInterval()
     {
@@ -70,4 +100,18 @@ private static Iec61850MonitorPoint BuildFastStatusPoint(Iec61850MonitorDevice d
             Category = "Position",
             PollingIntervalMs = 250
         };
+
+    private static Iec61850MonitorPoint BuildSlowMeasurementPoint(Iec61850MonitorDevice device)
+        => new()
+        {
+            DeviceId = device.DeviceId,
+            DeviceName = device.Name,
+            IpAddress = device.IpAddress,
+            SignalName = "Phase A current",
+            IecReference = "IED1LD0/MMXU1.A.phsA.cVal.mag.f",
+            FunctionalConstraint = "MX",
+            IecDataType = "Float32",
+            Category = "Measurement",
+            PollingIntervalMs = 2000
+        };
 }
diff --git a/tests/ARSAS.Tests/OfflineDataSetSignalSelectionRegressionTests.cs b/tests/ARSAS.Tests/OfflineDataSetSignalSelectionRegressionTests.cs
index 5cb5c3e37..97dc1b38a 100644
--- a/tests/ARSAS.Tests/OfflineDataSetSignalSelectionRegressionTests.cs
+++ b/tests/ARSAS.Tests/OfflineDataSetSignalSelectionRegressionTests.cs
@@ -72,13 +72,14 @@ public void EngineLock_PinsMergedReportProjectionEngineWithoutLosingMemberCentri
     {
         var source = File.ReadAllText(FindRepoFile("engines/ARIEC61850.lock.json"));
 
-        Assert.Contains("becda399b4a3ae34831215fc915798b4f846c1be", source, StringComparison.OrdinalIgnoreCase);
-        Assert.Contains("\"sourcePullRequest\": 81", source, StringComparison.Ordinal);
+        Assert.Contains("9ca4ee490a27046d5d2ffdc21f3614b2d7d58725", source, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("\"sourcePullRequest\": 84", source, StringComparison.Ordinal);
         Assert.Contains("one descriptor per static DataSet member", source, StringComparison.OrdinalIgnoreCase);
         Assert.Contains("generic Boolean status structures", source, StringComparison.OrdinalIgnoreCase);
         Assert.Contains("DataRef-enabled InformationReport ordering", source, StringComparison.OrdinalIgnoreCase);
         Assert.Contains("zero OptFlds", source, StringComparison.OrdinalIgnoreCase);
         Assert.Contains("quarantining unmapped canonical report metadata", source, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("dynamic reporting before MMS polling", source, StringComparison.OrdinalIgnoreCase);
     }
 
     [Fact]
diff --git a/tests/ARSAS.Tests/VisualSystemP0RegressionTests.cs b/tests/ARSAS.Tests/VisualSystemP0RegressionTests.cs
index 8b8f10c96..8a1e76d97 100644
--- a/tests/ARSAS.Tests/VisualSystemP0RegressionTests.cs
+++ b/tests/ARSAS.Tests/VisualSystemP0RegressionTests.cs
@@ -86,8 +86,8 @@ public void P0_KeepsTheReviewedAriecEnginePinUntouched()
         var testDirectory = Path.GetDirectoryName(FindRepoFile("MainWindow.xaml"))!;
         var engineLock = File.ReadAllText(Path.Combine(testDirectory, "engines", "ARIEC61850.lock.json"));
 
-        Assert.Contains("becda399b4a3ae34831215fc915798b4f846c1be", engineLock, StringComparison.OrdinalIgnoreCase);
-        Assert.Contains("\"sourcePullRequest\": 81", engineLock, StringComparison.Ordinal);
+        Assert.Contains("9ca4ee490a27046d5d2ffdc21f3614b2d7d58725", engineLock, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("\"sourcePullRequest\": 84", engineLock, StringComparison.Ordinal);
     }
 
     private static string Slice(string source, string start, string end)
diff --git a/tests/ARSAS.Tests/WorkspaceNoiseP1RegressionTests.cs b/tests/ARSAS.Tests/WorkspaceNoiseP1RegressionTests.cs
index 9c4e4a366..30bc9842c 100644
--- a/tests/ARSAS.Tests/WorkspaceNoiseP1RegressionTests.cs
+++ b/tests/ARSAS.Tests/WorkspaceNoiseP1RegressionTests.cs
@@ -87,8 +87,8 @@ public void P1_KeepsReviewedAriecEnginePinUntouched()
         var root = Path.GetDirectoryName(FindRepoFile("MainWindow.xaml"))!;
         var engineLock = File.ReadAllText(Path.Combine(root, "engines", "ARIEC61850.lock.json"));
 
-        Assert.Contains("becda399b4a3ae34831215fc915798b4f846c1be", engineLock, StringComparison.OrdinalIgnoreCase);
-        Assert.Contains("\"sourcePullRequest\": 81", engineLock, StringComparison.Ordinal);
+        Assert.Contains("9ca4ee490a27046d5d2ffdc21f3614b2d7d58725", engineLock, StringComparison.OrdinalIgnoreCase);
+        Assert.Contains("\"sourcePullRequest\": 84", engineLock, StringComparison.Ordinal);
     }
 
     private static string Slice(string source, string start, string end)