Hello David Thompson,
Please note that the Update From Database wizard does not map automatically to classes tables that have been added to the model. If the tables are not showing up in the wizard, they are probably already in the model. You should be able to see them if you open the Model Schema Explorer
window and expand the Tables
node. If you can see the new tables there, it is enough just to drag them to the design surface and the corresponding persistent classes will be created. I hope that helps.
All the best,
the Telerik team