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I use ProE to create all of m fixtures and part models for manufacturing and i have always had an issue with ProE models creating 2 surfaces on hole geometry like 2 180° surfaces or 1/2 cylinders making up the hole cylinder or ID. Is there a config setting for making these export as a one surface entity?
Short answer: No.
Long answer: too long and ends up the same as the short answer., but study up on how BREP models represent surface patches and how those surface patches are used in triangulation to be fed into the GPU pipeline.