Currently adding images leaves the source PDF untouched. Which is really good. But there should be an option to sync changes to the PDF on demand. That way if i were to view those PDFs outside of margiinnote 4 e.g. on mac using preview it would be possible to view the pdfs without opening Marginnote 4 first and then going to the pdf. This is a minor issue which can just be solved if there was an option to do so. Because some pdf files evolve over time. For example image related collections or sets.
Alternatively if there is a way to manage this already please guide accordingly. Any feedback would be appreciated.