I have multiple users who share an e-mail address and the system only allows one entry per e-mail. Is there a way to change the primary field to a member ID number? One of our unique fields is a "relationship field". Rather than maintaining multiple lists, I would like to be able to keep one with all our members and filter mailings based on relationship. In addition, when I upload changes, it just adds a new contact for that person. Is there a way it can overwrite the existing record with the changes?
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