I am not seeing the confluence-administrators and confluence-users groups in either Confluence or Crowd. We must have removed them. We are using Active Directory groups to give out permissions. We haven't had any issues with this setup; in fact, it is much less confusing using only one directory. But now someone is having issues seeing certain spaces in Confluence. He did some reading, and he seems to think it's because we're no longer using the built-in Confluence groups. The way we have our permissions now is I have set up groups in Active Directory that I mapped to roles in Confluence (see attachments).
So what I'm asking is: Is it okay to no longer have the built-in Confluence groups, or are they necessary in some situations?