>This is highly confusing. Basically, changing the value from the Project Properties only change it for the current build we will be doing. To change it, so it'd be saved, we have to go in Configuration Manager.

If you are looking at the Project properties then changing the selection in the Configuration ComboBox is *not* changing how the project compiles - it's simply showing the settings you have chosen when it *is* compiled for that configuration.

The way in which a project is *actually* compiled is set from the Solution properties and can be set differently for each Solution configuration. By default when, for example, the Solution configuration is 'Debug' then all projects are also compiled under the 'Debug' configuration - but it doesn't have to be that way.

And you're not limited to the built-in 'Debug', 'Release' etc configurations - you can create your own from scratch from the 'Configuration Manager' button in the Solution properties. You can then configure the compile behaviour for that solution configuration for each project in the solution....

Clear as mud huh?
Viv