diff --git a/apps/ied_simulator/qml/BrowserDataSetPane.qml b/apps/ied_simulator/qml/BrowserDataSetPane.qml
index 72e70d0da..430e7252f 100644
--- a/apps/ied_simulator/qml/BrowserDataSetPane.qml
+++ b/apps/ied_simulator/qml/BrowserDataSetPane.qml
@@ -8,6 +8,9 @@ Rectangle {
     required property var theme
     required property var reports
     required property var modelProvider
+    // The selected DA remains owned by the existing canonical MMS model.
+    signal dataModelRequested()
+    signal watchAttributeRequested(var node)
     readonly property bool overview: reports.selectedDataSetIndex < 0
     readonly property var selectedDataSet: !overview && reports.selectedDataSetIndex < reports.dataSets.length ? reports.dataSets[reports.selectedDataSetIndex] : ({})
     color: theme.background
@@ -74,6 +77,19 @@ Rectangle {
             root.selectedAttributeReference = ""
         }
     }
+    Connections {
+        target: root.modelProvider
+        function onContextChanged() {
+            // Context replacement may retain a textual IEC reference. Clear
+            // selection and lazy children so an old IED cannot drive actions
+            // in a new association with the same LD/LN/DO/DA names.
+            root.expandedMemberIndex = -1
+            root.expandedMemberChildren = []
+            root.showSelectedEvidence = false
+            root.selectedAttributeReference = ""
+            root.valueRevision += 1
+        }
+    }
     Connections {
         target: root.modelProvider.treeModel
         function onValuesChanged() {
@@ -335,17 +351,44 @@ Rectangle {
                         spacing: 0
                         Rectangle {
                             Layout.fillWidth: true
-                            implicitHeight: 25
+                            implicitHeight: 30
                             color: theme.surfaceRaised
-                            Label {
+                            RowLayout {
                                 anchors.fill: parent
-                                leftPadding: 8
-                                verticalAlignment: Text.AlignVCenter
-                                text: root.selectedAttributeNode.reference
-                                      + "  ·  " + root.displayValue(root.selectedAttributeNode.value)
-                                color: theme.text
-                                font.pixelSize: 9
-                                elide: Text.ElideMiddle
+                                anchors.leftMargin: 8
+                                anchors.rightMargin: 6
+                                spacing: 6
+                                Label {
+                                    Layout.fillWidth: true
+                                    text: root.selectedAttributeNode.reference
+                                          + "  ·  " + (root.selectedAttributeNode.hasReceivedValue === true
+                                              ? root.displayValue(root.selectedAttributeNode.value) : "NOT READ")
+                                    color: theme.text
+                                    font.pixelSize: 9
+                                    elide: Text.ElideMiddle
+                                    ToolTip.visible: hovered
+                                    ToolTip.text: root.selectedAttributeNode.reference
+                                }
+                                Button {
+                                    objectName: "browserDataSetOpenInDataModel"
+                                    implicitHeight: 25
+                                    text: "Data Model ›"
+                                    enabled: root.selectedAttributeNode.kind === "DA"
+                                             && root.selectedAttributeNode.readable === true
+                                    onClicked: root.dataModelRequested()
+                                    ToolTip.visible: hovered
+                                    ToolTip.text: "Inspect this canonical DA in Data Model; use its explicit Read command there."
+                                }
+                                Button {
+                                    objectName: "browserDataSetWatchSelectedDa"
+                                    implicitHeight: 25
+                                    text: "Watch DA"
+                                    enabled: root.selectedAttributeNode.kind === "DA"
+                                             && root.selectedAttributeNode.readable === true
+                                    onClicked: root.watchAttributeRequested(root.selectedAttributeNode)
+                                    ToolTip.visible: hovered
+                                    ToolTip.text: "Add only this canonical DA to the selected IED's bounded Global Data watchlist."
+                                }
                             }
                         }
                         Repeater {
diff --git a/apps/ied_simulator/qml/IedBrowserWorkspace.qml b/apps/ied_simulator/qml/IedBrowserWorkspace.qml
index 226ca85b1..5630e9169 100644
--- a/apps/ied_simulator/qml/IedBrowserWorkspace.qml
+++ b/apps/ied_simulator/qml/IedBrowserWorkspace.qml
@@ -769,6 +769,10 @@ Item {
                         theme: root.theme
                         reports: root.reports
                         modelProvider: root.context
+                        onDataModelRequested: root.selectSection(0, "Data Model")
+                        onWatchAttributeRequested: function(node) {
+                            globalDataPane.addSelectedData(node)
+                        }
                     }
 
                     BrowserReportPane {
diff --git a/apps/ied_simulator/test_browser_convergence.py b/apps/ied_simulator/test_browser_convergence.py
index a5eef6f65..289a8a100 100644
--- a/apps/ied_simulator/test_browser_convergence.py
+++ b/apps/ied_simulator/test_browser_convergence.py
@@ -87,6 +87,15 @@
     'root.showSelectedEvidence = selected',
     'BrowserEngineeringEvidence {',
     'objectName: "browserDataSetEvidenceInspector"',
+    'objectName: "browserDataSetOpenInDataModel"',
+    'objectName: "browserDataSetWatchSelectedDa"',
+    'signal dataModelRequested()',
+    'signal watchAttributeRequested(var node)',
+    'onClicked: root.dataModelRequested()',
+    'onClicked: root.watchAttributeRequested(root.selectedAttributeNode)',
+    'function onContextChanged() {',
+    'root.selectedAttributeReference = ""',
+    'root.expandedMemberChildren = []',
     'visible: root.selectedAttributeNode.kind === "DA"',
     'root.selectedAttributeNode.hasReceivedValue === true',
     'root.selectedAttributeNode.valueSourceReference',
@@ -115,6 +124,9 @@
     raise SystemExit("BROWSER_DATASET_EVIDENCE_FAIL duplicate/hidden evidence inspector")
 if 'Timer {' in data_set:
     raise SystemExit("BROWSER_DATASET_PROVENANCE_FAIL implicit per-DA timer")
+if ('onDataModelRequested: root.selectSection(0, "Data Model")' not in workspace or
+        'globalDataPane.addSelectedData(node)' not in workspace):
+    raise SystemExit("BROWSER_DATASET_HANDOFF_FAIL use canonical Data Model and per-IED watchlist")
 if 'readEngineeringSelected()' in data_set or 'readEngineeringSelected()' in data_model:
     raise SystemExit("BROWSER_TYPED_EVIDENCE_FAIL passive inspector initiated MMS Read")
 
diff --git a/docs/WORKBENCH_CURRENT_HANDOFF.md b/docs/WORKBENCH_CURRENT_HANDOFF.md
index e178448e5..88a27bbbb 100644
--- a/docs/WORKBENCH_CURRENT_HANDOFF.md
+++ b/docs/WORKBENCH_CURRENT_HANDOFF.md
@@ -4,6 +4,14 @@
 > **Primary strategy and ownership contract:** [WORKBENCH_ARSAS_GUI_SSOT_STRATEGY.md](WORKBENCH_ARSAS_GUI_SSOT_STRATEGY.md).
 > **Scope:** installed native ARStack Workbench in apps/ied_simulator. Not a web app, WPF clone, or the separate ESP32-P4/SMV Studio track.
 
+## M2M native DataSets -> Data Model handoff slice — 2026-10-15
+
+- Branch `feat/workbench-m2m-dataset-da-actions-context-20261015` based on merged #179 main `ce643e81cd7640ed2b694c0914282177f871a9fa`. Keep this section IN PROGRESS until exact-head CI/merge checks.
+- The selected DataSet attribute inspector gains **Data Model ›** (reuse existing canonical selection and explicit Read action) and **Watch DA** (reuse per-IED bounded Global Data addSelectedData), following ARSAS Explorer's short-path navigation without copying .NET/WPF or adding a protocol engine.
+- Context replacement invalidates DataSets' expanded FCDA children and selected DA evidence even when the next IED reuses the same IEC reference. Any action is disabled without a readable selected DA.
+- No extra MMS request or timer; no duplicate SCL/MMS tree. Existing stable indexed 64-child FC-matched DA projection and report-first behavior stay untouched.
+- Native Qt QML smoke / 60k large model / Browser convergence and exact-head SCL-assisted gates required; selected FCDA physical evidence and standalone installed Windows UI parity remain open.
+
 ## Active native parity + repository naming work — 2026-10-15
 
 - Work branch: feat/native-workbench-reference-hygiene-arsas-parity-20261015; base main c8aabf292c370993950b8682718cd56b77f2cabf. IN PROGRESS until exact-head CI and merge.