This idea wouldn't apply to competitive games, by the way.

When you're N1'd you don't contribute to the game unless someone votes you other than the killer(s) (for example they give you a gun) EVEN if you're a PR because nothing would be different if you weren't in that game.

Though, if you're N1'd and a cop gets a report on you, or a GS guns you, or an oracle votes you, or anyone with a night meeting picks you, then if you weren't in that game they'd have that vote on someone who was alive and therefore you did contribute to wether the town wins or loses.

For example:

If you were N1'd but someone guns you, then yes, you did contribute because if you weren't in that game an alive player would be gunned.

If you were N1'd and the cop checks you, then you contributed because if you weren't in that game the cop would have a report on an alive player.

If you were N1'd but NO ONE checks you, orcs you, guns you, or any role with a night meeting votes for you other than the killer(s), you didn't contribute because nothing would be different if you weren't in that game.