On V5 beta I'm chasing my tail trying to get to the hidden lines dialog during a save-as PDF. I see the same issue in V4.

What I'm seeking to accomplish is to generate a PDF which includes the background image along with the MoI objects. I am only able to see the MoI objects in the PDF.

My drawing and image are centered on the origin.

I've played with the Image settings Draw and Show in, but these don't seem to change the PDF output. Transparency is set to 50%

View / Display hidden lines is normally unset but setting it does not seem to help.

From the documentation, during a save-as, I should be seeing the options for generating outlines, silhouettes & hidden lines and these are apparently related to the output of the background image, but try as I might, I am unable to see these options. Setting Scale to either "Fit to page" or "Preserve units" doesn't help. I've even tried editing moi.ini and setting GenerateOutlines=y within [AI/PDF Export]. I did have more coffee and even did some searching on the forum, but all to no avail, so resorting to asking what seems like a really basic question!

--Larry