I don't think there's any reason that I couldn't export to those PDF formats, but when I look at the "Adobe PDF Presets" I don't see the option for "separations" listed in the Output tab the way it's listed in the regular print settings. The Ink Manager also won't let me select which inks to print. On the other hand, if I choose to export the PDF through the regular print menu, I get the options for "Separations" and can selectively turn off the inks, but I don't see any way to specify a specific PDF format. It just lists "Adobe PDF" in the drop down, besides "PDF Creator", "Send to OneNote 2010", "Microsoft XPS Document Writer" and "Fax".
I couldn't tell you why my shop can't pull the separations themselves and I'm not entirely sure what's going on over there. However, this isn't a professional commercial print shop with highly experienced press operators. I work for a State Government agency and our print shop is staffed by whoever managed to pass a state competency exam. To give you some idea what that means, they placed me in an ITS title when they hired me because they didn't have a title for graphic design. In order to be eligible for promotion, I had to test within the ITS series. I have zero professional experience with ITS functions and have never written a single line of code, yet with a little studying I managed to score an 85 on the ITS Programming exam. Not an entrance exam either, but the third level up, which is a supervisory position. It's probable that the press operators and managers at our shop have little professional experience and serious gaps in their working knowledge. Of course, I don't know it all either and I suppose none of us do, so I won't be throwing any stones.
But I digress! In any case, I really appreciate your taking the time to respond. If you have anything else to add after reading this response, I'm all ears!