Andrew,
Although CCRM and CTM use almost identical infrastructure and share a lot of database concepts and other internals, they are still very different. TE is not a CRM, and lacks the CRM features of CCRM. In particular, it does not have a concept of an Account and all that infrastructure. If you are only using the project management functionality of CCRM and not any sales force automation, marketing, pipeline, leads management, etc., it might be possible to migrate, though we've never tried it to my knowledge. If you are linking projects to accounts, it will likely be more complex.
Can you give me a better idea of what you are using and how?
We have plans for a true integration between Centric CRM and Team Elements in the future, so you'll be able to get the best of both worlds.