Attached is a sample file created in Metrostation workset. A lofted surface was created, but it cannot be use with the "trim surface" tool. I have to drop the parametric surface to a smart surface for it to work with the "trim surface" tool. Is that WAD?
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Best regards,
Tuan Le
u17_Metrostation_loft.dgn
Thanks for providing the example file containing the element produced from the Loft By Surface tool. I'm thinking that due to the type of element being a Parametric Surface to be why the Trim By Surface tool not working properly. I will investigate further and advise of the outcome.
RegardsAndrew BellTechnical SupportBentley Systems