My client has requested that the name of the connection string in the app.config be changed.

LLBL Generates:

<add name="ConnectionString.SQL Server (SqlClient)" connectionString="blah blah" providerName="System.Data.EntityClient" />

My client wants:

<add name="AAA" connectionString="blah blah" providerName="System.Data.EntityClient" />

I didn't see an option in the designer to change the name to "AAA"

Connection string key name pattern The pattern for the key in the generated config file under which the connection string for a target database is stored. A macro is required for this property: {$ProviderName}. This macro is replaced with the short name in the driver.config of the active driver. This way multiple connection strings can be emitted into the generated code without name clashes.

That's a project setting in the Designer. Under: Code Generation => General