I'm not sure what other advice you might have already received...however, I've been keeping all of the kexts from Clover's "10.13" directory also in the "Other" folder. As I haven't jumped on the 10.13.6 update yet, I don't know if this will help. Just another suggestion amongst many.
In that directory (if you had Clover configured to create backups) you'll find a backup of your clover configuration before you installed a newer version. If it's your config.plist file you need...it would be in there.