Usually the documents cannot be easily transformed to CSV, as there might be graphic elements and different grids of different size. It is not trivial how would the export to CSV in general look like.
On the document we can enable the possibility to export a single grid. Just enable the export button for the grid.

RESOLUTION
This option to export single grids will be convenient. Unfortunately, this could not work if there is one grid which is going one after another without any blank spaces. In this situation there is only one possibility: convert document to Excel and then convert this Excel to CSV.
KB439671