diff --git a/index.html b/index.html
index 9985f05..8d8baab 100644
--- a/index.html
+++ b/index.html
@@ -1868,12 +1868,16 @@
                 e.layer.setStyle({ color: '#cca300', weight: 6 });
             }
 
-            // If a new layer was created (via startPolyline), merge it into our existing layer
-            if (e.type === 'editable:created' && routeLayers[activeV.id] && e.layer !== routeLayers[activeV.id]) {
-                const newPoints = e.layer.getLatLngs();
-                routeLayers[activeV.id].setLatLngs(newPoints);
-                activeV.routes = newPoints;
-                map.removeLayer(e.layer); // We only want our primary layer
+            // If a new layer was created (via startPolyline or startNewPath), merge it into our existing layer
+            if (e.type === 'editable:created' && activeV && routeLayers[activeV.id] && e.layer !== routeLayers[activeV.id]) {
+                const current = getNestedCoords(routeLayers[activeV.id].getLatLngs());
+                const addition = e.layer.getLatLngs();
+                const merged = [...current, addition];
+                
+                routeLayers[activeV.id].setLatLngs(merged);
+                activeV.routes = merged;
+                
+                map.removeLayer(e.layer); // Clean up temp layer
                 routeLayers[activeV.id].enableEdit();
             } else if (routeLayers[activeV.id] && e.layer === routeLayers[activeV.id]) {
                 activeV.routes = e.layer.getLatLngs();
@@ -2190,22 +2194,11 @@
 
         // --- Variant Management UI ---
         window.startNewPath = (id) => {
-            const layer = routeLayers[id];
-            if (layer) {
-                // Activate drawing state
+            if (map.editTools) {
                 state.isDrawing = true;
                 state.isMeasuring = false;
                 updateToolCursors();
-                
-                // Ensure edit mode is on
-                if (!layer.editor) layer.enableEdit();
-                
-                // Trigger new path drawing
-                if (layer.editor) {
-                    layer.editor.newPath();
-                } else {
-                    console.error("Editor not found on layer", id);
-                }
+                map.editTools.startPolyline();
             }
         };