Hi im really confused, i recently sent out an advert to be printed in a local magazine that i designed in illustrator. I sent it over as a pdf PDF/X-1a:2001 preset like i usually do without any problems. Any way when i saw the printed ad it was a completely different version of the ad. After looking at it i can see that its reverted back to a previously saved version of the ad somehow when its been printed. ive never heard of this happening before, any ideas?