
When you add a subtopic, you select Append Child, but when you add a topic on the same level you should select Append Sibling. Instead, you have Insert After, which doesn't mean the same kind of thing (in the XML world, it is just too non-specific). Maybe I can see the problem easily because I am a native English speaker? It is subtle, but annoying.
I hope this helps.
Thanks,
Chris Boorman.