New Asagarth thralls packed up and left

Game mode: [Online | Singleplayer
Problem: Bug maybe
Region: [here]

They must have known I was coming back to cause havoc in their little sleepy town. Placed a wheel of pain close by but not that close by, went in the camp and they had all disappeared, nothing but empty buildings. have restarted and nothing, move away from that area hoping the chunk would reload, didn’t work. this may have been reported already. Has anyone came across this before.