Here you can read the Q&A history.
To get new community support please go to GitHub discussions (KnowageLabs/Knowage-Server · Discussions · GitHub).
I lost the dataset menu in GIS Document Designer, can be seen from the picture with the following link Thank you
https://drive.google.com/open?id=1i9Uy17YQKNJ7HLgY_9yG_dUKqIH9ZRdx