Tony,
>There is an app.config in the Business project and one in the application project.
>
>I've had to modify the one in the Business project since I have two SQL Servers to access, one local and one remote, so I set up two DatabaseSets.
>
>Should the one in the application project be modified the same way, or can I just leave it alone?
It's best to keep them in synch. The app.config in the business object project is used when you test or deploy your business object project stand-alone (without a Windows or Web Forms front end).
Best Regards,
Kevin McNeish
Eight-Time .NET MVP
VFP and iOS Author, Speaker & Trainer
Oak Leaf Enterprises, Inc.
Chief Architect, MM Framework
http://www.oakleafsd.com