Whenever I edit a page which has previously had it's parent set, the parent link then dissipears as if I never set the parent link. I then have to do "More Topic Actions" and set the parent again.
This is obviously not desirable behaviour.
If you answer a question - or have a question you asked answered by someone - please remember to edit the page and set the status to answered. The status is in a drop-down list below the edit box.