What I'm asking is where in the order of deployment does it say that infiltrating requires that you have not already been deployed?
Infiltrating has no restrictions. If you have the ability you can infiltrate regardless of whether you have already been deployed.
Infiltrate, pg75:
"Units with the infiltrate ability may set up in accordance iwth the infiltrate special rule (see page 84)"
Infiltrate,
pg 84:
"Any infiltrators deployed on the table at the start of the game are deployed after all other units. If both sides have infiltrators ..." "Infiltrators may be set up ..." "Alternatively they may be set up ..."
Nothing about "They can't already be deployed." Course it doesn't say they can be redeployed either.
Actually the text "Any infiltrators deployed on the table at the start of the game" specifically applies to Karandras - he and his unit are deployed on the table at the start of the game. Then they get deployed again!
It's silly. But nothing about infiltrators seems to prohibit you from having them on the table already. The deep strike rule however does explicitly say they can't have been deployed already (they go into reserves).
Whatever - my gut tells me people will let you use Karandras to infiltrate a squad. It's been hashed out here. Ask a tourney organizer, because it's a hazy part of the rules until the new codex comes out