For PDF editing I'm working with Neo... It's just a great tool for all those who might need to edit PDF's. I think there is even a 30 day trial version available on esko's website.
Check this page Neo - EskoArtwork
Did you saved the single ArtPro file with a "Separated preview"???
This option is available through the Preferences - File - Save separated preview by default or within the Save Dialog.
Odystar might be a solution
Odystar might be a solution
Just add a search on Odystar on this forum and you might find something which suits your needs. Or go for the official pages on Odystar - EskoArtwork
Vee: AWS's Flavor or format is build around the PDF specifications same as the APE does, so you can say native! I think Khasmir has given the ideal explanation on this.:D