If Sharon is a revealed cylon before the sleeper phase, according to the rulebook(p. 20) "all of the abilities listed on a revealed Cylon player's character sheet are also ignored."

Does this include her Sleeper Agent negative ability " During the sleeper agent phase, you are dealt 2 loyalty cards (instead of 1) and then moved to the brig location"? I understand she cannot be moved to the brig as a revealed Cylon, but does she still receive 2 loyalty cards as on her sheet or 1 as everyone else does? Just wondering because this would mean that there was 1 loyalty card in the deck that was never dealt out during the game.

She still recieves all her loyalty cards. Its FAQed somewhere, I'm just not sure where.

I suppose, though, you could wait to add her extra "You are not a Cylon" card to the loyalty deck until the Sleeper phase. It tweaks the early game probability of someone being a cylon slightly. That's my own musing though, not in any way an official rule.

The original response was that it was just left in the deck. Then it was reversed. But I am not sure where it was left off officially.

I'd still lean towards leaving it in the Loyalty deck (i.e., one doesn't get distributed). If it happens to be the Cylon card, that's Boomer's fault for revealing early.

It should definitely be dealt to her. Otherwise it's basically a one-in-X chance that the humans win if someone picks Boomer and she gets revealed early.