Larry, under the Personal Message board, you have to hit the "Reply To All" button located at the very top and very bottom of the string of messages. That will keep the conversation as a whole. The "Reply To All" button is shaded dark, so it stands out more. If you just hit the "Reply" button at the top of each individual message, then it will only keep that one message. Weird, but that's how the forum is set up. Hope that helped.