When you have a Visual Studio solution with 1 or more Telerik AJAX projects and one or more non-web projects, the upgrade wizard does not list any projects.

Steps to reproduce the behavior:

1. Create a new Telerik AJAX project with target framework 4.7.2 or 4.8
2. Add a new class library project with target framework 4.7.2 to the solution.
3. Select the solution file.
4. Launch the Upgrade wizard from the Telerik main menu.

Expected behavior
The Upgrade wizard should list projects