White hats got everything they need from Pompeo when he was CIA director. At the same time, Durham investigation was under way. There was likely full cooperation.
Haspel is dirty (station chief in London under Brennan) and was plugged back into the spot, likely with a FISA warrant out on her. White hats could use her to two-hop to the entire black hat/corrupt politician communication network.
No other explanation for putting her back in after they knew she had assisted a treasonous plot.
My theory, anyway.