When you create a new connection to a Business Intelligence or NoSQL data source, Toad automatically maps the data source objects. Toad gathers metadata from these objects which is cached (in a hidden table) and retained between sessions for one week. After one week, all objects are automatically refreshed.
During this initial mapping process, Toad maps only metadata. The actual data in each column is mapped as needed, such as when you execute a query.
To manually refresh all the Salesforce objects, select an object in the Object Explorer and then go to the View menu and select Refresh All (Shift F5).
To refresh an individual object, then right click the object and select Refresh Item.