I just had this same problem almost one year later so apparently this defect has not yet been fixed in Constant Contact? I had the same person listed twice with 2 different email addresses. The duplicate contact that I deleted was not assigned to any email lists (was created in 2015) and had not received any campaigns. Since there was no history there and there was in the other record, I decided to delete that contact. Of course, when I try to update the contact record that I kept for historical information with the email address from the record than had no history, it says that email is already in use. Are you saying I need to upload one contact through a file in order to bypass the error message of the email already in use? and then subsequently I end up losing all of the history I was trying to keep associated with that contact which has the older email address that the contact doesn't wish to use anymore? Can Constant Contact restore the one deleted record for me and I change the email address for that record and then delete it? Would that have been the way to solve this problem and avoid the 'that email record is already in use' error? What is your ETA on fixing this bug please? ... View more