Okay, I ran some tests:
[olist][*]Created CS6 native AI file with 3 Pantone Plus colors in simple graphics: square, triangle, circle and 6 small boxes, each having Red, Green, Blue, Cyan, Magenta and Yellow [*]Saved 3 Native AI files: (1) with ICC Embed, (2) without ICC Embed, (3) EPS
[*]Created 2 raster images from photo: (1) RGB tif, (2) CMYK tif[*]Opened new Quark file and placed both AI files and Raster images[/olist]#1) As before, the AI Native file with ICC embedded shows up as B&W in Quark. The one without ICC and the EPS look fine.
#2) Created two different PDFs: Press Quality with 'Composite CMYK' chosen
[olist][*]First Press Quality PDF was with the spot colors from the AI files still intact as spots[*]Second, I converted the spot colors in Quark by editing>changing from Pantone + to CMYK then unchecked the SPOT box, then created a Press Quality PDF[*]Opened both in Acrobat X[/olist]#3) The first PDF (with the spot colors intact) shows no spot colors.
#4) The second PDF (where I converted the spot colors to CMYK) shows the CMYK plates AND THE SPOT color plates! Why is this? If I converted the spots to CMYK in Quark before making the PDF, why would the PDF show the spot plates? They don't show up in the first PDF where I left the spot plates intact! That really confuses me. Leave spot colors alone and the PDF doesn't show them...convert the spots first and the PDF shows they exist!!!
I did venture back to previous PDFs I made months ago and sent to the printer. When I look at the plates in Acrobat X, they too show the spot plates even though I converted them to 'process' (via right-clicking the color in the color palette) first.
So I'm still trying to figure out a new workflow. I guess I'll have to create a layout with lots of variables and send it to my printer to see what actually prints. It's a cost that may be worth it now, then to find out on a real job.[:(]