|It's possible. Start by reading this article. |
Before performing this operation on a live domain I would set up an isolated test network that mimics your current setup. Try the move on this test setup, carefully documenting every step that you take. It may go smoothly, or you may encounter a few problems that need to be worked through. That way when you come to do the real thing you will have found solutions to any potential problems and it will just be a matter of following your documentation.