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UNC path redirection

Our company recently switched to a new data server.  We will call the server Prime.  The old server we will call Main.  In order to make the transistion smooth I setup up DFS on Prime and called all the shares the same as the file shares that used to be on Main.  I turned all the file shares off on Main.  One of the shares was called "Group".  So with DFS turned on when ever someone went to \\Main\Group\ they were redirected to \\Prime\Group\ through DFS.  I did this so I would not have to go around the intire company and change everyones shares and mapped drives.  Now that we have DFS turned on any new shares we make has \\domain\Group.  Here is where a problem has occured.  Yesterday we turned the old server off to see if anyone called the helpdesk about an issue.  We had several people call because they couldnt access the file shares.  They got the path couldnt be found.  They still had the old \\Main\Group UNC path.  If I turned the old server back on then they were being redirected to the new server through DFS \\Prime\Group.  Is there a way or something I can do to where when someone types in anything with \\Main it gets directed to the new server \\Prime.  
2 Solutions
If you're going to finally scrap Main, I'd suggest removing its A DNS record and creating Main alias, pointing at Prime. This way you'll get the quick'n'diry workaround until you replace all references  from UNC to the domain DFS root.
Hope it helps!
DFS puts both servers into a namespace. There are a number of things you will want to do.

Stop DFS replication
Break the namespace
transfer FSMO roles to Prime (If you haven't already done so)
Demote main by going to the command prompt and typing DCpromo.

perform FRS, DNS and AD metadata cleanup as needed.

Then, go into DHCP scope options and remove Main as a DNS server.

For any clients with issues, go to their command prompt and type:
IPconfig /flushdns
IPconfig /release
IPconfig /renew

Now all files are on Prime:

You will need to recreate the namespace as the sole DFS server as Prime.
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