[Serusers] DB Mode in Permissions module

Hello List. I'm using the permission modules (in particular de allow_trusted command) to authorize the trusted hosts in my ser box. I'm also using the db_mode "1" (cache mode), to avoid that every INVITE became a request to my local database. Once in a while i need to add new "trsuted hosts" to my platform, but the changes in the database are not reflected in the allow_trusted query (since is cached). My question is : Is there a way to force the SER to read the changes in the DB without restarting SER.? or i have to use db_mode 0 to acomplish this?. I really appreciate any help here. Thanks in advance. Regards, Ricardo Martinez.-