Twinmotion import issues with geometry

Geometry that looked clean in Twinmotion comes into Unreal with visible triangular surfaces. This is especially noticeable in the wood trusses but also more subtly visible in the front faces of the rectilinear structures. Using the beta 2 Twinmotion import plugin in Unreal. The model was initially created in Sketchup Pro, then direct linked to Twinmotion 2020.2, then imported to Unreal 4.26.1.