HI Sean, only things that can be converted to polygons are handled by LumenRT. So I would suggest to you if it is the case, to drape the image on a terrain. If you encounter any other issue, there are here some suggestions given by David on this matter: https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/w/wiki/28678.stm-file-incorrectly-exported-into-lumenrt https://communities.bentley.com/products/3d_imaging_and_point_cloud_software/f/343228/p/131042/402056#402056 Note that there is defect in that combination: Microstation CE up 4 + LumenRT CE up 1 the draped image is not exported, but fixed in the next release of LumenRT CE up 2 I hope this helps regards Mara
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