I finally have some time to upgrade from 7.5.7 to 7.5.8. But, I am very happy with the Anti-Span Registration Filter and don't want to loose it.

Does the standard installation affect the Anti-Spam Registration Filter?

Do I need to do anything special prior to upgrading from 7.5.7 to 7.5.8 to maintain the filter?

Do I need to find the filter package and instructions and re-install once the upgrade to 7.5.8 is completed?

Thanks!