@Override
    public void cloneFields(final Cloner cloner, final Object original) {
        super.cloneFields(cloner, original);

        this.lodCalculator = cloner.clone(lodCalculator);
        this.cameras = new SafeArrayList<>(Camera.class, cameras);
        this.cameraLocations = new SafeArrayList<>(Vector3f.class);
        this.lastCameraLocations = new SafeArrayList<>(Vector3f.class);
        this.lodCalcRunning = new AtomicBoolean();
        this.previousCameraLocation = new Vector3f();
    }
Back on the ogl thread: update the terrain patch geometries
jme3-terrain/src/main/java/com/jme3/terrain/geomipmap/TerrainLodControl.java