Business Rule

I have a business rule that is on a specific account. I would like to apply the business rule with the same name that is under all accounts and default settings.

How can I get this account to revert to using the default settings business rules? Is there a way (maybe a sql query) to identify any accounts that are not using the default business rules? A quick sampling of a few accounts shows that there are several, likely many, that have a custom business rule for the account. This is an error since we want to manage these globally.

I tried going into the site and changing the site from copy default settings to refer and then back again but this did not make a difference.