diff --git a/index.html b/index.html
index ea68c6f..0bfdab0 100644
--- a/index.html
+++ b/index.html
@@ -2817,12 +2817,25 @@
                     
                     features.forEach(f => {
                         const p = f.properties || {};
-                        const varName = p.Variante ? `Variante ${p.Variante}` : (p.name || "Variante A");
+                        // Robustly find 'Variante' (case-insensitive)
+                        const rawVariante = p.Variante || p.variante || p.VARIANTE || '';
+                        const rawName = p.name || p.Name || p.NAME || '';
+                        
+                        const varName = rawVariante ? `Variante ${rawVariante}` : (rawName || "Variante A");
                         const slot = state.variants.find(lv => lv.name === varName);
+                        
                         if (slot && f.geometry && f.geometry.coordinates) {
-                            slot.id = f.id || p.id || slot.id;
-                            slot.routes = f.geometry.coordinates.map(c => ({ lat: c[1], lng: c[0] }));
+                            slot.id = f.id || p.fid || p.id || p._id || slot.id;
                             
+                            // Handle potential nested coordinate arrays from different GIS exports
+                            let coords = f.geometry.coordinates;
+                            if (f.geometry.type === "LineString") {
+                                slot.routes = coords.map(c => ({ lat: c[1], lng: c[0] }));
+                            } else if (f.geometry.type === "MultiLineString") {
+                                // Take the first segment of a MultiLineString if it's imported that way
+                                slot.routes = coords[0].map(c => ({ lat: c[1], lng: c[0] }));
+                            }
+
                             // Re-sync the polyline layer if it exists
                             if (routeLayers[slot.id]) {
                                 routeLayers[slot.id].setLatLngs(slot.routes);