Suggested update/fix - Dont mark files as saved if saving to PDF with perverse editing turned off
One 'feature' that really bugs me about Illustrator is that you can make many changes to a document, save it as a PDF, turn off Preserve Editing Capabilities, and Illustrator will mark the document as 'saved', allowing you to close it without prompting.
The risk is that you can easily lose work by exporting a low-res proof, and then accidentally closing without any warning or prompts that you will lose the editable file.
It would seem like a simple fix, don't mark the document as saved if saving without full editing checked.
BTW is a NOT a fan of how Illustrator does dual formats ai/pdf
