Direct Billing and commission management - not available per site after LIVE

I discovered from Mary today that as Agencies/Partners there is no way to manage Direct Billing once the site has gone live - which is a problem if we are wanting to manage/edit/change the commission structure or billing amount that the client must pay. The function is there in Trial sites, but the moment the site goes Live, this page is no longer available.

Please vote to have this function visible/editable at all times.