Overprint preview in Acrobat-how to make a PDF view the same without it on?

[Colorblind]

In the "advanced..." tab of the Acrobat Pro print window, make sure the "Simulate Overprinting" box is checked at the "output" pane.

[pajdzn]

Well, I discovered the "simulate overprint" function and checked it and my missing image appeared. But it also changed the page coloring, and in some spots lighter boxes appeared behind images where there was an even coloring before. The background color is a Pantone color, 50% of 293CVC.

We use a Prinergy EVO workflow and it runs through our system fine, but proofing to a ps device is a big problem and the customers don't understand or care why the proofs don't look right.

We were using an Iris 43 Wide for basic proofing and an Epson 10600 w/DuPont RIP for HiRez and both worked fine. But the Iris is old and hasn't been supported for a while now and the ones we have just aren't going to last much longer. Any suggestions would be greatly appreciated.

[Colorblind]

In the same advanced.../Output tab, make sure your profile is set to "Same as Source (no color management)"