I deleted some boards, moved some topics (posts) and board. It is now less confusing (even to me). No content was deleted but unfortunately some of the moved topics of moved topics were in boards deleted. They can still be found in the Search.
Members can create topics in Aggregator (https://polar-sun.xyz/index.php?board=10.0) and Discussion (https://polar-sun.xyz/index.php?board=49.0) boards, and comment in all other boards.