The thing about missing information - is that you don't know it's missing because it's not there.

This is happened before. It's called omission. Omission can be deliberate, yet no one can see it.

I was speaking about the future if I saw such a thing happening, or thought it might, I would archive and re-post, collect elsewhere.

I got the sense this kind of thing was going on here, but did not see it directly. I've seen it done in other "investigations" though.