Moving enrolled devices from internal IP to external IP with new hostname

Hello everyone.

We have a Mac OS X server deployed on our internal network with an internal ip. This internal ip uses the internal DNS convention so it ends on .corp

More and more of my users are not coming to work on a regular basis in this office so I want to be able to push device updates to them while they are not in the office on our Wireless.

For that I do not only need to change the hostname to our publicly listed domain, but I also have the change the IP.

I understand that I need to request a certificate with our authortiy (godaddyin this case) as I do not want to use a self signed one.

I understand that new certificate needs to be installed and assigned prior to me changing IP and Hostname.

My question is this. For all the devices which are already on the enrollment server using the something.corp Hostname (and thus certificate) do I have to re-enroll them?

Is there a way to automatically re-enroll them?

I am trying to find documentation on this process and I am having a hard time.

Thank you so much!