https://www.tntware.com/tntconnect/help/faq_en/pages/how-can-i-merge-combine-two-contacts-into-one.aspxFirst, pick the contact you want to keep , and the contact you want to delete . Then, on the contact you want to delete: Select all their tasks and right-click to " Link Item(s) to a Different Contact ..." (and choose the contact you want to keep) SelectenCommunityServer 2008.5 SP2 (Debug Build: 40407.4157)