Color problems in InDesign preflight

[RogerB]

I've created a two colour document in ID CS2, but when I preflight it it says that there's six color plates, two spots and CMYK.

I've been through all the images and set them to the right colour, been through all the Illustrator EPS files and checked them (as well as deleting all unused colors, brushes, etc) and checked all the para/character styles in ID - but still getting the same problem.

If I export to PDF from ID, and then check the colours it still tells me tthere's six plates, but when I turn off everything but the two spot colours the artwork shows everything I need. Turning the CMYK plates on 1 by 1, doesn't show anything other than the cropmarks which are generated by the PDF export. Anyone help...