I have numerous mailing lists in my address book. Every time I move an email address from "All Address Books' to a mailing list, it disappears from the mailing list it is in. For example: 2 Mailing List: Monday Group & Tuesday Group. I want Johndoe@abc.com in both lists. I 'drag & drop' the Johndoe@abc.com to the Monday Group. When I 'drag & drop' it to the Tuesday Group, it disappears from the Monday Group. How I add the an email address to both the Monday Group & the Tuesday Group? Thanks.