In fact, I just upgraded an MFC music application[0] to VS2022 and 64-bit this year, marking the first release in 15 years.
I'm not a Windows developer, and had to learn it while working on this upgrade. The MFC documentation has clearly atrophied, but has far as I can tell, there's also not blessed upgrade path for C++ applications.
There is C++/WinRT + WinUI 3, but looking at the screenshot that will pretty much require re-designing the whole UI so it's not going to be a simple upgrade.
It's a technical application, so I'm not entirely thrilled by doing that. I just looked for documentation to replace a popup or preference window with WinUI 3, but didn't see anything that made sense for me.
I'm not a Windows developer, and had to learn it while working on this upgrade. The MFC documentation has clearly atrophied, but has far as I can tell, there's also not blessed upgrade path for C++ applications.
[0]: https://github.com/terinjokes/mixere