Export Outline selectively

Is there a way to export the outline to CSV selectively. I use folders for chapters, files for sub chapters. Can I export Chapters only?

Select the chapter folders that you want to export and create a new collection with them via Documents > Add to Collection > New Collection. You can name the collection if you want. Then click the header bar with the collection name and the “–” button in it it (i.e. the bar separating the list of documents from the collection tabs, not the tab itself). That will load all the folders in the editor as a flat list, so it won’t show the folders’ subdocuments. Switch to Outliner mode to set up whatever columns you want exported, if you want only some of them, then Export to CSV.