Putin’s people don’t want to let the cat out of the bag yet! Trump is potentially very useful to them.
What we’re seeing is the CIA / NSA / DNI trying to limit the potential damage of this type of blackmail information existing on Trump. They’re also trying to constrain him - if Trump ‘goes soft’ on Russia and eases sanctions over the Ukraine, reduces the USA’s involvement in NATO, or takes other steps that appear to assist Russia, the suspicion will now be that he’s acting in response to blackmail, which they’re hoping he can’t be seen to be doing. They’re trying to push Trump into divesting properly. It wouldn’t matter if Russia had bribed Trump financially with sweetheart deals in the past, if he sells his investments and puts everything in a blind trust before taking office. Then it’s just money that he’s gained. If he retains property or investments in Russia they still have leverage over him.