Controls’ file says that Georgiou was brought to the prime universe in 2257, ”but after a few years we lost contact.” The events of season two of DIS take place almost immediately after season one, unless there were ”a few years” between the resolution of the Klingon war, and the USS Discovery setting out from Earth to pick up her new captain on Vulcan in “Will You Take My Hand?”.

I wonder if our boi Ash Tyler had something to do with that when he covered up what happened to Discovery (and, I guess, to Leland). Maybe he decided to remove Georgiou from that whole situation and falsify a record saying she disappeared some time later.

I also wonder if Ashy T. is still involved with S31 at this point - the man’s a Klingon, so he’s got the life span for it.