Jim,
It seems like you shoul dbe able to split the latest message from
the rest, but I guess you can't.
Ding! Ding! Ding!
I think you've identified a bug!
You can't split the first message of a topic (which is what your second screen shot looks like). Make sure you're using the More menu under the second or later message - the message you want to become the first in the new topic.
Here's the bug:
Make sure you have _the date sort ascending_. You should see "Previous Topic" and "Next Topic" buttons below that last message. If you've got the date sort reversed in your current view the Split menu item isn't where it should be (and is where it shouldn't).
I'm a little afraid to learn what happens if, in that circumstance, you _do_ split the first message of the topic. Maybe the whole thread gets a new topic, maybe the server crashes for following a null pointer.
This one I cc to support.
Shal
Shal Farley