Thanks for the comment. I can only go by what Adobe write in their own documentation: The current PDF specification (1.6) states that Illustrator 9 uses PDF 1.4 as its native file format. I am very surprised that basic things such as image scaling do not work, surely, this is trivial? Advanced features like importing fonts are a very different issue, of course. Do you have access to a current version of Illustrator? I am curious to see how well it copes with the above PDF file exported from ArtWorks.