To maintain an existing Primary Phone number (the Personal Phone) and add another phone number (not Primary), import the Individual name, the home phone number and the business phone number
If you import the Individual name and the phone number mapped as Personal Phone/Email Business Phone GiftWorks will add it to the individual profile instead of an existing Household Profile. If there is an existing phone number, the imported phone number will become the primary phone number
If you map first name, last name and/or organization name, the importer looks for a match of all name fields that are mapped. If the data in all of the fields matches between the import file and GiftWorks (including blank fields), the importer will update that donor. If there is more than one donor in GiftWorks that matches in the same manner, the importer will update (or add data to) the first such donor it finds.