That doesn't mean there is a client list.
And that is one of the issues with releasing files that may contain a name only. There will be guilt by association from opening a can of worms. Good luck with that, DOJ.
There are court files under seal and civil cases have all been settled that presumably would involve non-disclosure agreements.
There are witness statements that question the credibility of the stories. ' I have tapes of so and so and so and so and so and so banging so and so but I can't release the tapes.'
Uh, ok.
It's taken 60 years to release the JFK files and I get the impression that the files indicate there are questions that will never be answered.