WebWorks Help 5.0 does not preserve cookie ID for Favorites when using AutoMap
Make sure to set both Format Settings: wwhelp-cookies-id (a specific value in alpha-numeric), and wwhelp-cookies-daystoexpire (large value). Full explanation available here: http://wiki.webworks.com/Overrides/9.2.2/WebWorksHelp5.0FavoritesPersistance.