It sounds like users are using View/Print to review what they've already done, and then making changes based on what they've reviewed. If that's the case, a possible solution would be to clearly differentiate previewing and saving so that users are able to preview the document without creating anything that can be accidentally sent to their customers.
Have a "Preview" option that creates a temporary PDF, stores it in a place the user will not access, and automatically opens it. (You could mark it as a draft on the top of the document, since it is a draft).
Then, have a "Save" or "Finalize" option that saves the PDF in the "PDF Files" folder. You could have a confirmation here since it should only happen once per document.
The key is making it nigh impossible for users to click "Save" when they intend to preview. So it might even be worth having a separate screen: A big, friendly "Preview" button on the first screen, and a smaller "Next" link below it. On the next page, no option to edit, but an option to Save/Print.
