ASNA Upgrade Assistant Wizard steps you through the upgrade process and creates a new Visual RPG for Visual Studio 2012 project (your existing project is left unchanged). This is a one-way process; the new Visual RPG for Visual Studio 2012 project cannot be opened in Visual RPG Classic.
When your project is upgraded, the language is modified for any syntax changes and your Visual RPG Forms are converted to Windows Forms. In most cases, you will have to make some changes to your code after it is upgraded. This is required because certain objects and language features either have no equivalent in Visual RPG for Visual Studio 2012, or have an equivalent too dissimilar for an automatic upgrade. After the upgrade, you may also want to change your application to take advantage of some of the new features in Visual RPG 11.2.
To help you make the changes, after your project is upgraded, Visual RPG adds an upgrade report to your project itemizing any problems, and inserts comments into your upgraded code alerting you to statements that will need to be changed.