Visual Basic .NET Project File Recovery After Framework Migration

Upgrading a Visual Basic .NET project to a newer target framework involves modifications to the XML-based .vbproj file and potentially the source code via the Visual Studio Upgrade Wizard. While reverting the project file to a previous state can restore the target framework version, this process does not automatically undo syntax transformations or metadata changes applied to the .vb source files during the migration.

There is a need to determine a consistent strategy for ensuring full environment recovery when a framework upgrade introduces breaking changes in the Common Language Runtime (CLR) that are only detectable after the project is saved and the original state is overwritten.

• Does reverting the .vbproj file alone suffice to restore previous compiler behavior if the Upgrade Wizard modified source code syntax?
• What is the recommended method for synchronizing the rollback of project metadata with the restoration of source-level changes?