Hello, when importing the panel part shape using CAD, two points should be noted:

1. It should be drawn with polylines, that is, PL lines, and there should be no other line segments;

2. It cannot be a block. If it is a block, it needs to be exploded by pressing the X key.

After drawing the shape, drag the panel part from the material library, press the B key on the keyboard, right-click the panel part - select "Panel Part Point Editing", click (Import CAD), and then save.