Currently, chats moved into a Space cannot be moved to another Space or moved back out. There's no option to correct an accidental move, or to bifurcate a Space into two and split the chats between them. This is needed as be obvious as more people use Spaces, and Spaces evolves.
Specifically…
• Move chats between existing Spaces.
• Remove chats from a Space.
• Undo an accidental move.
• Move a chat from a Space to private Chat