I am curious to know if units of evil associated with an account reduces when a decision is reversed;

When an account is banned, a certain level of evil points is linked to that IP to dissuade ban evasions, affecting users using than or similar ip addresses.
Now in some outlier cases, bans have been reversed after a while to a less restrictive punishments or none at all; in such situations are the evil points which were added removed automatically, or the have to decay as normal after a longer while?

Also, does signature ban or temporary ban affect the evil points?