This is about misx packaging in Visual Stadio, but about the symbol file created when the package is generated.
When building using the Microsoft GDK Unity plugin provided by Microsoft, mono does not generate a zip of the symbol file, and IL2CPP generates a zip of the symbol file.
Can you figure out why mono doesn’t generate a symbol file (zip)?
On Windows, symbol files are using PDB format, not zip. If you’re looking for a zip file, it likely contains several PDB files. I suggest looking inside the one generated from IL2CPP build to see which binaries they correspond to.
We ship PDBs in \Data\PlaybackEngines\WindowsStandaloneSupport\Variations<Variation> next to the binaries they correspond to. We copy the PDB files to the output directory if “Copy PDB files” checkbox is checked in build settings.
Now, I don’t exactly know how you’re packing your app so I don’t know why there’s a difference between IL2CPP and Mono. The link you pasted outlines the process for UWP apps, rather than Windows Standalone. Are you still following the same steps?