Hi all. 

Well, we have been using this release ourselves for a very long time.  It is solid.  But if you have older projects you want to leave on the older version, then one option would be to create a backup copy of the StrataFrame database and either keep it or create a new one that you upgrade to 1.7.3.5.  This way you can migrate things over a project at a time if you need to and still swap between them using the data source connection for StrataFrame inside of Visual Studio.  But in truth, it is always easier to move everything forward at once.

Backing the DB up is always a good idea though, no matter what!