I used to be able to move pages via Drag-N-Drop in the hierarchy view or via Tools->Move menu.
Now Drag-n-drop doesn't work. I have seen the bug report that it was broken and supposedly fixed.
When I attempt to move the page I created I the New space area is greyed out and a yellow triangle with the error message:
You cannot move this page to another space because you do not have permission to remove it from this space.
When I view the restrictions on the there are no restrictions.
This is OnDemand