Fix cut plan confirmation cleanup

src/pages/Cutting.tsx

@@ -684,7 +684,6 @@ const Cutting = () => {
     setSelectedPreviewRowIds(rowsAvailableForOrder.map(row => row.id));
     setPreviewQuantityOverrides({});
     setPreviewLayers({});
-    setPreviewMarkerReferences({});
     setLotSelections({});
     setProductionPlanForm({ name: cutPlanReference, responsibleUserId: null, responsibleName: '', expectedDate: '', notes: '' });
     setIsPlanDetailsOpen(false);