Jucer not generating JuceHeader.h

This is for a vst3 plugin on Windows.
I tried some trickery with JuceHeader.h
I’m not finished, but I needed to do an update. I updated Juce and recompiled Jucer.
I reopened my jucer file and went to save / open, but it didn’t overwrite the JuceHeader.h file.
Like a genius, I decided to delete it, instead of moving it, but Jucer still won’t touch it.
Any idea why that might happen?

Have you tried using “File > Save Project” in Projucer?

Yes, I’d tried that, too. I tried every option there.
Finally, though, I wisely renamed the Build and Juice modules folders and ran Producer again. Then it replaced them.