Does Damage Dealt to Haunts Carry Over Between Resets?

[Brissan]

If a character notices a (non-persistent) haunt during its manifestation and damages it with positive energy without dealing enough to disperse it, and the haunt then does its surprise round and then ends, does that damage dealt to the haunt carry over between resets? Or does it go back to full hp when it resets?

[Marina, Servant of Wadjet]

I would say no, when the haunt resets so does its HP.

[Cavall]

No. It must be done before manifestation. Once manifested, whole thing is set again.