There is a known issue with Authentication Manager in versions prior to 6.8.2e. Adding a new bypass entry appears to delete all other entries. A service restart may alleviate the issue until the next entry is added.
Upgrading to at least version 6.8.3a is recommended (Administration – Product Update).
Note: A new release with a redesigned user interface and enhanced functionality is available. Get more information on this upgrade at http://www.wavecrest.net/support/announcements.html.