When the director of the National Archives found out that Berger was being investigated by the FBI for stealing classified documents, the director's first call went to.... Bruce Lindsey. That National Archives director was subsequently fired, but I suspect that before he left he likely destroyed the originals at Lindsey's request.
Gorelick ( and the 9/11 Commission Report Dietrich L. Snell was a Senior Counsel & Team Leader ) were put in charge of disseminate what information got seen by the full Commission.
So the woman who created the Wall which blocked the flow of information, was again put in charge of blocking information to the Commission which was charged with finding out why information got blocked.