I have a .tin file I created by extracting graphic triangles (from original autocadd file), however, when I attempt to use the edit triangles tool, the triangles do not visualize, the tin hull is there, but no triangles. I can do some limited editing, such as deleting triangles along the hull, but without being able to see the triangles, obviously I cannot add points or edit vertices. Have been editing tins for years and never run into this before, anyone else?
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