diff --git a/src/controllers/node_controller.js b/src/controllers/node_controller.js
index 161c4b7..b2e9eb9 100644
--- a/src/controllers/node_controller.js
+++ b/src/controllers/node_controller.js
@@ -45,10 +45,12 @@ export default class extends Controller {
      * @param {import("../state.js").NormalizedSceneNode} normNode
      */
     addSemanticNode(normNode) {
-        if (!AppState.semanticNodes.get(normNode.label)) {
-            createSemanticNode(normNode.model, normNode.label);
-            AppState.semanticNodes.set(normNode.label, normNode.content);
+        // First remove any existing sem node
+        if (AppState.currentSemNodeId) {
+            ATON.SemFactory.deleteSemanticNode(AppState.currentSemNodeId);
         }
+        createSemanticNode(normNode.model, normNode.label);
+        AppState.currentSemNodeId = normNode.label;
     }
 
     /**
diff --git a/src/state.js b/src/state.js
index 4f55810..6983e0b 100644
--- a/src/state.js
+++ b/src/state.js
@@ -28,7 +28,12 @@ let AppState = {
      */
     ontology: {},
     treeNodes: {},
+    // Redundant??
     semanticNodes: new Map,
+    /**
+     * @type {String|null}
+     */
+    currentSemNodeId: null,
     mainNodeId: null,
     currentScene: null,
     sceneHasAudio: false,
diff --git a/src/utils/aton.js b/src/utils/aton.js
index b991a24..87969fa 100644
--- a/src/utils/aton.js
+++ b/src/utils/aton.js
@@ -22,6 +22,7 @@ export function initAtonEvents() {
     });
 
     // Triggers on mouse click / tap events
+    /*
     ATON.on("Tap", (e) => {
         let node = ATON.getHoveredSemanticNode();
         if (node) {
@@ -35,4 +36,5 @@ export function initAtonEvents() {
             document.dispatchEvent(event);
         }
     });
+    */
 }
\ No newline at end of file