A demo mode LonMaker or CT database can't be upgraded to production database.
Please start LonMaker/CT and select the New Network Options tab. In the Network Components section, please verify the name of the Drawing Template. It should say LonWorksMetric. If it says LONDEMO, it is the reason why LonMaker/CT starts with the demonstration network.
Once a network has been created, it is not possible to change the Drawing type, i.e a demo network can not be changed to a production network. Only new networks can be set to be production networks.