Adobe Illustrator PDF file setting

With the new GF software I found that my closed shapes without fill had an “engraving” layer. I found that saving the file as an Adobe PDF Preset [PDF/X-4:2008] (found at the top of the PDF dialog) resolved that issue.

I also cleared all the checkboxes “Embed Page Thumbnails” and “Create Acrobat Layers”.

Remember to revert to the .ai file before editing.

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