I have done case management, and my friend is currently a nurse navigator. We used to work together, and when she describes her job, it is VERY similar to case management. If you're looking to get into inpatient nursing in the future, then I would reconsider doing a nurse navigator position at this point in your nursing career. You may not lose skills, but they definitely won't be being used while doing nurse navigator job. This could affect your confidence somewhat when you go back to bedside nursing. Good luck!