Business Rule Manager stores its objects (fields, rules, tasks, profiles, etc) in the database that you defined under "Database connection" when creating the repository. In your case, if you can't see your previously created objects, it might be that you created several repositories and are currently not connected to the one that has your objetcs, or you registered several repositories in your Data Management Studio, and you're not opening the correct one in Business Rule Manager.
You can see the list of registered repositories in the Administration riser, under Repository Definitions, and which ones you are currently connected to.
As a side note, I dont' think MS Access is a supported database format for repository storage, it could be a problem.
Hope this helps. If not, you might want to contact Technical Support (support@sas.com).
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