No, you can't split an individual message.? You can split off a message to start a new thread.? As mentioned, anyone that replies using the original subject/title will have their replies in the original thread.? Any with the new subject would go in the new thread.? That's why splitting isn't recommended for an active topic.? Folks that only use email will tend to reply to the original which wouldn't have the new subject.
Duane
Duane