I realize this is an in progress gh python solution for the interim. That being said, I would figure it is typical for families to contain symbolic line work. This specific instance a, complex curtain panel, has symbolic linework to show the hinging of the operable vent. I confirmed these are symbolic lines not model lines. A Line is still geometry, merely 2d instead of 3d, could it still be gathered and output? or don’t try to extract line geometry at all?
Thanks, -Mark