File Types: Importing - System Protocols don't get imported

For example, if I export file types, change the System Protocol URL one (for default web browser), then import the exported file types, the URL one does not get changed back to the exported one - it stays the same.

This includes the name, icon, open action, and probably other fields.

Should importing file types work in this case, including changing the default web browser (which does get changed in Windows Default apps if I manually change the open action exe in Opus File Types editor).

The import/export is only for Opus-specific settings/overrides, not all the system-wide file type details that live in the registry.

You'd need to use regedit or something else to save/restore those.