@ahmaddanial do you think a SQL copy-and-move function would be a way to accomplish this? A perse relabel of the channel the messages belong to?
My thought is something along the lines of creating the new private channel, and then replacing the channel ID of the messages we want to move with that of the private channel we just created.
I’m genuinely not sure how viable that would be as a solution but it could be a bridge until a plugin or something like that can be developed, if this idea would actually work at all.