Exporting PDF in Allegro PCB Designer

Hi all,

I want to export pdf file from a brd file with hatching format for shapes (left image), but Allegro just allows me to export as blank or solid shapes (right image). Anybody may give me a clue to solve this, thanks all.
I exported pdf with Allegro 16.6 lite  in File -> export -> pdf (for both optional Filled shapes or not).