It is no coincidence, officials say, that Haspel is personally blocking declassification and release of documents given that she oversaw the CIA's bureau in London when former British agent Christopher Steele was colluding with a Russian spy to peddle the bogus collusion hoax.
https://twitter.com/seanmdav/status/1311480110785204225
So that's how they found everything out…Gina either got sick of what she saw & snitched on them, or goodguys approached her early on & read her in.
The reason for the not allowing declassification, I'm not sure of yet