Over the weekend I migrated our staff data from one server to another, now our folder redirection is broken........

We have a policy to redirect the users my documents folder to their home folder and now it insists on redirecting to the old location rather than the new location.

The users have had their home folder location changed in AD and nothing has changed on the policy.

I've tried a gpupdate /force and it makes no difference.

Any ideas why this is happening?