When you start an earlier version of an Autodesk product or view the list of projects in the System menu, projects created using Inferno 2009 do not appear in the list.
If you want to work with media and resources created in Inferno 2009 in an earlier version, you must:
Alternatively, you can export the processed clips from Inferno 2009 and then import them in the earlier version of the product. In this case, however, the changes you apply in Inferno 2009 are irreversible.
