Shares are Read Only after removing DFS on Windows Server 2008

We have 2 shared folders on Server 2008 R2; one is shared to everyone and the other contains the private folders for each department.  We used to use DFS, but we haven't been using DFS for a while; we have been mapping directly to the server.

Last night I was doing some cleanup on the server and I removed the listings in DFS.  Once I did that, everything on the private drive became Read-Only and nothing could be saved or created on that drive.  Obviously DFS was still doing something for us, but I don't know what.  I'd rather not go back to DFS; I'd rather just map the clients directly to the server.

I have checked the share permissions on that folder:
Administrators - Owner
Domain Users - Read
{sys admin account} - Read/Write (that's me)
{another domain admin account} - Read/Write

Access to the folders underneath are controlled by AD security groups.  These groups are setup by department and each department security group is given full control over their department's private drive folder. in Security and Sharing.

Is there something further I need to do to get DFS out of the picture or is there something else I need to do on the Sharing /Security tabs on the folders?

Any help would be greatly appreciated.

Jono