diff --git a/meshroom/core/attribute.py b/meshroom/core/attribute.py
index c0651de2..8291580b 100644
--- a/meshroom/core/attribute.py
+++ b/meshroom/core/attribute.py
@@ -93,6 +93,9 @@ class Attribute(BaseObject):
     def getType(self):
         return self.attributeDesc.__class__.__name__
 
+    def _isReadOnly(self):
+        return not self._isOutput and self.node.isCompatibilityNode
+
     def getBaseType(self):
         return self.getType()
 
@@ -262,6 +265,7 @@ class Attribute(BaseObject):
     label = Property(str, getLabel, constant=True)
     type = Property(str, getType, constant=True)
     baseType = Property(str, getType, constant=True)
+    isReadOnly = Property(bool, _isReadOnly, constant=True)
     desc = Property(desc.Attribute, lambda self: self.attributeDesc, constant=True)
     valueChanged = Signal()
     value = Property(Variant, _get_value, _set_value, notify=valueChanged)
diff --git a/meshroom/core/node.py b/meshroom/core/node.py
index bb67c3fd..42c2bc57 100644
--- a/meshroom/core/node.py
+++ b/meshroom/core/node.py
@@ -865,6 +865,9 @@ class BaseNode(BaseObject):
             fusedStatus.merge(node.fusedStatus)
         return fusedStatus
 
+    def _isCompatibilityNode(self):
+        return False
+
     @property
     def globalExecMode(self):
         return self._chunks.at(0).execModeName
@@ -1031,6 +1034,7 @@ class BaseNode(BaseObject):
     fusedStatus = Property(StatusData, getFusedStatus, notify=globalStatusChanged)
     elapsedTime = Property(float, lambda self: self.getFusedStatus().elapsedTime, notify=globalStatusChanged)
     recursiveElapsedTime = Property(float, lambda self: self.getRecursiveFusedStatus().elapsedTime, notify=globalStatusChanged)
+    isCompatibilityNode = Property(bool, lambda self: self._isCompatibilityNode(), constant=True)  # need lambda to evaluate the virtual function
 
     globalExecModeChanged = Signal()
     globalExecMode = Property(str, globalExecMode.fget, notify=globalExecModeChanged)
@@ -1167,6 +1171,9 @@ class CompatibilityNode(BaseNode):
             for i in range(self.splitCount)
         ])
 
+    def _isCompatibilityNode(self):
+        return True
+
     @staticmethod
     def attributeDescFromValue(attrName, value, isOutput):
         """
diff --git a/meshroom/ui/qml/GraphEditor/GraphEditor.qml b/meshroom/ui/qml/GraphEditor/GraphEditor.qml
index 9b6c2e11..897d5802 100755
--- a/meshroom/ui/qml/GraphEditor/GraphEditor.qml
+++ b/meshroom/ui/qml/GraphEditor/GraphEditor.qml
@@ -222,7 +222,7 @@ Item {
                 id: edgeMenu
                 property var currentEdge: null
                 MenuItem {
-                    enabled: edgeMenu.currentEdge && !edgeMenu.currentEdge.dst.node.locked
+                    enabled: edgeMenu.currentEdge && !edgeMenu.currentEdge.dst.node.locked && !edgeMenu.currentEdge.dst.isReadOnly
                     text: "Remove"
                     onTriggered: uigraph.removeEdge(edgeMenu.currentEdge)
                 }
diff --git a/meshroom/ui/qml/GraphEditor/Node.qml b/meshroom/ui/qml/GraphEditor/Node.qml
index 2825dbbc..84c0bd49 100755
--- a/meshroom/ui/qml/GraphEditor/Node.qml
+++ b/meshroom/ui/qml/GraphEditor/Node.qml
@@ -270,8 +270,6 @@ Item {
                     height: childrenRect.height
                     anchors.horizontalCenter: parent.horizontalCenter
 
-                    enabled: !root.isCompatibilityNode
-
                     Column {
                         id: attributesColumn
                         width: parent.width
@@ -311,6 +309,7 @@ Item {
                             id: inputs
                             width: parent.width
                             spacing: 3
+
                             Repeater {
                                 model: node ? node.attributes : undefined
                                 delegate: Loader {
@@ -326,7 +325,7 @@ Item {
                                         property real globalX: root.x + nodeAttributes.x + inputs.x + inputLoader.x + inPin.x
                                         property real globalY: root.y + nodeAttributes.y + inputs.y + inputLoader.y + inPin.y
 
-                                        readOnly: root.readOnly
+                                        readOnly: root.readOnly || root.isCompatibilityNode
                                         Component.onCompleted: attributePinCreated(attribute, inPin)
                                         Component.onDestruction: attributePinDeleted(attribute, inPin)
                                         onPressed: root.pressed(mouse)