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Knockout works then stops working


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I have thousands of small black ellipse curves (circles) of different sizes to show sands/dunes on a map. I need knockout so that black will not turn into process black. My global black of 0/0/0/100 was working very well after days of labor when I checked each of the CYMK using Print Production/Output Preview in Illustrator. After switching over from AffPub to AffPhoto to edit colors in a raster tiff in a completely different part of the doc, something happened so that I can no longer get my knockout.

From AffDesigner I had outputted a PDF with the "sands" so that I could place the PDF inside an outline of the area of the sand. This worked very well (love in AffPub). When my knockout no longer worked (I could only get process black without knockout), I was using the same PDF. No input changes, but something happened in AffPub, even though I use the same export preset (with overprint not checked!).

Is this a bug in AffPub that might be because I took the doc into AffPhoto (via the icon in AffPub)?

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If you can let me know your workflow for creating the knockout and what you did in Photo I can see if the issue can be reproduced in a simple document. If something is happening that is unexpected I can log it with the developers to look into.

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