that in the image is the mask of a display.What's wrong? pdf is only a display document, it is obvious that the supplied plate will not have those interruptions.
opened it with other pdf readers? contacted who provided you the pdf?
would the solution only serve to view a continuous profile?
hehewe summarize:
in spac software geometry is correct
the open dwg with illustrator is correct
the pdf generated by spac is not correct.
the open dwg with a two-dimensional cad is correct?
have you tried to open the pdf with other readers?
Have you tried other spac export settings?