Yesterday I migrated 2 VB.NET applications (2 DLLs) written using .NET Framework 4.8 to .NET 8 using Upgrade functionality of Visual Studio 2022.

I built these 2 DLLs without great issues.

When I loaded Properties page I got a unique page with all application's parameters.

Today I continue to migrate a third DLL but I encounter some problem.

I go back to a previous migrated DLL to see how Properties are displayed. I see that format of displayed page has changed. This is now an old format.

What is happening?

How can I switch between old and new format ?