What are the configuration steps I need to take to migrate my existing client nodes from an existing CHEF Server to a new CHEF Server? These are all Windows clients.
What are some of the gotchas I need to know about when performing this migration?
Though it's a bit old, this post is still a great place to get started, and is definitely enough to walk you through the gotchas.
You could try the latest and greatest method of migration, Upgrade lab. This is a great way to ensure that both the latest server and latest client can encompass your automation.