Mass change Bill Usage

Wondering if there is a way to mass change the bill usage active diretory account

We have some vaults where the user is deleted from active directory and exchange but the bill usage to say

Account Unknown (\S-1-5-21-981810520-441649794-654838779-13402)

I'd like to be able to assign a default account to them so they can be mainted and deleted at a future date