Hi Stefan Mayer thanks for your patience, we have introduced this feature in our latest release.
We have added a new tab in the Export to pdf overview page (Content tools → Import & Export → Export to PDF → Content templates). Users can filter and save content templates for export at a category and article level.
This comes in handy when exporting any segment repetitively in your knowledge base. The user doesn’t have to go through the entire process of compiling the articles and categories every time. Instead, they can just click on the Download option and the same content set would be exported again.