Tie Attack Squadron
"During any engagement in which you have placed at least 1 fate card in your edge stack, this unit gains [Unit Damage] and targeted strike."
"Interrupt: When you would place a card into your edge stack, instead return a card from your edge stack to its owner’s hand. (Limit once per turn.)"
The FAQ states:
"The TIE Attack Squadron’s passive ability checks whether or not you have placed any Fate cards into any of your edge stacks during an edge battle this engagement. Even if those Fate cards are canceled (by an opponent’s Twist of Fate), or if the resolution of the Edge Battle is canceled (by your own Twist of Fate), a Fate card has still been placed, and you would still gain the bonus æ icon and targeted strike keyword."+
If you place a fate card in your edge stack and then remove it with Shadowed Surveillance would that still allow Tie Attack Squadron to gain [Unit Damage] and targeted strike?
Based strictly on the wording it seems like the answer is yes but would it require showing your opponent the card you removed to prove it was a fate card?