Sorry for the delay. I think this might be what's going on:
The match rules only show up in the search if it’s matching against the entity chosen in the first picklist.
Example: when you select contacts, open the rule search and click “View All”. This shows Match Rule with name “2”, that matches against contacts.
Image may be NSFW.
Clik here to view.
Example: when you select companies, open the rule search and click “View All”.
Image may be NSFW.
Clik here to view.
Hope this helps.
Thanks,
Ken