A simpler method would be to use the cone post option, but it does not clone the photos incorporated or the attachments. So you need to go the extra step and do the copy topic option available to you as a moderator. That way the new copy will retain the images and attachments. You can always clone it if it is just text.
"I love science and it pains me to think that so many are terrified of the subject or feel that choosing science means you cannot also choose compassion, or the arts, or be awe by nature. Science is not meant to cure us of mystery, but to reinvent and revigorate it." by Robert M. Sapolsky