[quote:36812ab5e9]If I DID NOT go back into "illy" and change them from spot colors to CMYK could someone down the line have problems separating this file?
The Short answer is Yes.
Typically the workflow for cmyk print is to create a high res composite pdf. Placed EPS (if not under the influence of transparency or forced colour management) Spot Colours will just get passed through to Distiller and the cmyk conversion would happen later. Sometimes this would be done by a profile to profile conversion, sometimes the alternative colour space of the spot colour would be used, sometimes both. If you really want the cmyk numbers its safest to do it as early as possible and check it in the PDF. Its certainly feasible to leave the spot colours in the eps and lots of people do, but changing them could save you an unexpected result in print.
... there was the puzzle of why the sun came out during the day, instead of at night when the light would come in useful.
Terry Pratchet