We have two virtual domain controllers running Windows server 2012 Eval edition. Both have active directory and replication to each other. We need to add the license key to both machines, but according to Microsoft, AD can't be present when the code is added to change the version from eval mode. Are there any issues to be aware of when removing AD for the license key addition and then putting it back on? We will still have one AD server running while the other is not, and then vice versa.