Tom,
It sounds like what you want to do is start taking advantage of the MetaDbc. The Framework's documentation should help. Then all you have to do is add a record that points to your old database. When you build data environments the Framework will pull the views out of the correct database.

What I do is put all the multi-table joins that cross databases into the main database that the frameworks created.

Just one other thing. I've found that my applications work best if I reset the path in the BeforReadEvents method of the App. I just trap the current path get the location of the additional databases from the MetaDbc table and the append their paths to the one the framework created. Doing it in the BeforeReadEvents allows my app to work on mulitple systems that map the data differently. I just change the path in the MetaDbc and everything is fine. Take a look at the JustPath() function to get a proper path for the Database.

I hope this helps. Sorry for the long answer.
Bill