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).