@Іван Андрєєв can you elaborate? Are you exporting a page, or an attachment from a page? If you are referring to exporting a page, you will only get the current page in the export (PDF/Word) without any link to page history or previous images. If you need to export a previous version of the page you will need to revert to that version in the page history context - but be careful since reverting to a previous version will erase all newer versions of the page.
I hope this helps.
If that is the case, you can just click on the ellipsis (...) on the top right of the page and export as many times as you want while you edit the page. You may also need to adjust the PDF export properties under Space Settings to get the right look and feel.
I'm sorry @Іван Андрєєв, but what do you mean by document fields? You can change the margins and orientation of the PDF. Are you trying to adjust specific fields within the Confluence page and how they are exported to PDF? If so, you are correct that you cannot make micro-adjustments of this sort.
If that is the case, you need to adjust these settings in the PDF Stylesheet section. Documentation for this can be found here: