I don't know what keeps happening to my comments but they keep disappearing. So I'm sorry if this shows up twice. Can anyone explain why you convert to RGB before proofing? I always rasterize a proof but I've never bothered with converting to RGB first. Is it just for online viewability?
If you convert the job to an RGB image a Visual representation of the job is created, but none of the prepress work you have done is there. or in short, you create a "picture" of the job