Does TightKnit save deleted or edited Slack posts for member history and moderation?

I would like to see ALL the posts of a certain member over the lifetime of their membership in our Slack community. Even the posts we deleted (or they deleted) because they violated our rules. These do not appear to be synced into the Tightknit community subdomain portal as far as I can tell. Does TightKnit save the deleted or edited posts anywhere? If not, maybe this could be a useful feature (it would be for us!) For example, creates a file of all posts for potential expulsion from a community.