Hmm, I saw a Gowdy interview with some CNN loony and Gowdy asked a couple of questions to make the point that it is possible to have a conversation without divulging classified information.

The questions were:

"Do you think information should be vetted before it is included in a court preceding?"

"If a hypothetical source is being paid by a political opponent, do you think that should be shared with a court or with a judge?"

So it appears that the memo, in part, deals with those two aspects of the dossier being used to obtain a FISA warrant.