How? Sharing Configuration Info Among Packages

Ok, I understand it is possible, but I still can't quite get the mechanics of it to work.



I create a new BIDS project, and add a package to it, and add 3
connection managers, and set the server, instance, DB, etc. for SQL
connections. I change the name of each connection manager so the server
name is not there, but use something more like a generic name of what
the database is. Fine. I right click in the Control Flow area and go to
configurations. I enable configurations, and save to a common place on
the C drive. Save everything, exit, VS, fine, and I export all
connection managers properties.



Then I start Visual Studio again. Create another new BIDS project, add
a package to it, and add 3 connection managers. I don't actually
connect them, but use those same generic names from the first
iteration. I enable configurations for the package. I am somewhat
expecting to see the connections change from the same-o-default to the
data I used in the first go around.



I am obviously missing something big here.