AddressFinder is a National Change of Address (NCOA) service that will find constituents that have filled out a NCOA card. These addresses are updated in a specific manner and only specific fields are updated.
If the option to keep the old address is marked, the existing address is copied and placed on the addresses tab with a new address import ID. The updated address is added as the preferred, and the appropriate footnote is added as an address attribute.
If the option to keep the old address is not marked, the existing address is updated and the address import ID is unchanged. Address Type and Info Source are only updated if a value is entered for those fields on the Process Options tab (these two field are blank by default).