How to export hidden geometry to autocad

Hi everyone, normally when I export a 3d to autocad 2d, I do not see the geometrical lines that generate the curved surfaces of cones, cylinders and spheres, but tonight I was working and I do not know why but it has done it, in the form of into individual polyface entities, and I wanted know how it is done to be able to repeat it. I attached the images with the lines and without them. Thank you!