You are missing the Purple margin "raw Curve" for Two of your implants,.
Very rarely does the SUM3d has issues with auto-location of margin.
You need to draw margin manually with the Pencil on margin Icon.
I think it has to do with the fact your elements have hole at bottom?
Your "//Prepline 180 1mm<TYPESEL1,2>" has no milling path at all.
Double check your parameters.
I am unfamiliar with that operation, and I will look into it further...probably a delimitation issue.
I have not spent much time looking at CAM file yet, but I'm sure there is more...