Might need some more detail to go on here before anyone can give much help. Google maps does not function in the traditional sense most of us here are accustomed to when dealing with mapping apps.
Are you talking about saved places in Google maps? Do you have saved places you can access online now but not offline, or no saved places at all?
Are you trying to import waypoints from a file to Google Maps?
I've only used Google Maps on a limited basis, it shows promise though. It does not work like a normal GPS app though and becomes somewhat frustrating to use if you try to treat it as a GPS app.