More Enrollment Issues

After running the BN105 on 01/02/14, we have a number of employees whose dependents are no longer enrolled as of 12/31/13.  For example, an employee has family coverage on 01/01/14 but no dependents enrolled.  On 12/31/13, the dependents were enrolled.  This seemed to affect employees who did not participate in open enrollment.  Any areas to look at?

Is there a canned report to show employees with family coverage and no dependents enrolled?