Ok this is crazy. If I delete the photo & leave the field in the editor BLANK - the desired photo shows up correctly in the preview. It's as if there's a "ghost" or invisible photo in the editor.
Thank you for reaching out to the Community! I apologize that you are seeing your photo twice when you inster it into your email campaign only once. So we can take a closer look, please email social_support(at)constantcontact(dot)com your username, the title of the email campaign, a screenshot of the issue, a reference to this post, and information on which email client you are using.