I recently posed a question to the Moderators and received no reply. . I believe I have the answer to that question. The Edit Post Feature disappears with time elapsed . Recently I found that the Edit Post Feature seemed to disappear from some of my posts and not others. I wondered who and how the edit feature was controlled. . Nothing nefarious about it. It seems that with some of the upgrades to SM that have been going on this particular change occured. . Posts are automatically locked where no edit is possible under normal circumstances by the poster after 24 to 36 hours. I am not sure exactly the time, but it falls in that range. If you post something, and then want to edit it, you better do so in less than 24 hours, or you may not be able to do so. Maybe it is a good thing. It keeps us all more honest and aware. With our mouths once we say something it stands. You can't take the words back. You may apologize for them, but they still were uttered.