I only had a few dancers when I tested this so I didn’t notice it, but I just realized I lost control of my thralls.
(I still get the Entertainment buff but I cannot interact with them. If I try to move them, it says “YOU CANNOT TOUCH THIS!”)
So this cannot be working as intended.
Description says I’ll lose everything. I keep buildings and lose thralls. That makes no sense.
So the real answer to the question is: You lose placed combat/entertainer thralls but keep your structures.
I like that… Thralls are very loyal.
Indeed they are. We have a member that was playing solo and well established. After creating a clan and adding another person, all of his thralls attack his new clanmate.
That was a fun exchange to read in chat.