I was a bit curious about that too, but I'm seeing what Grant mentioned: when you add the separate configurations, some amount of that info seems to be put directly into the .dbproj file, and some more seems to go into the .dbproj.user file.

Some of it seemed to be duplicative, but I can't say I saw everything that was in the .user, duplicated in the .dbproj. I don't know what the best practice is as the moment (I just really started dabbling with this version), but it does seem to be the DEFAULT setting. The UI seems to put those there, and I don't see any way to change where that info might get stored.

For example - I can't find hide nor hair of the designated deployment DB connection string anywhere else, and I'd have to agree with Grant that that in itself would be something you'd want to set and keep with the project.

Perhaps ask Jamie what the best course of action for those things might be...