In case you run into a scenario where you have multiple faces flipped and do not issue the lowering of the performance, as in my case just for reworking imported assets, you might find this UE5 python script helpful:
The tutorial explains how to import a Need for Speed 5: Porsche Unleashed track into Unreal Engine 5 using Blender for 3D modeling and UE5 tools for rendering and lighting adjustments. It details processes such as extracting the original game files, converting track elements to usable formats, and adapting the materials for modern graphics engines. The article provides step-by-step guidance on managing textures, lighting, and Unreal Engine 5’s capabilities to breathe new life into classic tracks, making them playable within UE5.