I am using this document to export my CE project to lumenrt: http://www.e-onsoftware.com/wiki/LumenRT/index.php/Documentation/Export_Plugins/Esri_CityEngine_Plugin
But I couldn't get sculptable terrain. I only got a shape with the lumenrt logo. I attached the screenshot and the results.
Another question is whether I can manipulate individual object in Lumenrt after exporting. I can only move the whole layer but not the individual tree/building