I see. Yes... this is because of the drag-drop re-ordering system we added into your CMS.
Since the links depend on the index of the content, and re-ordering changes the index, re-ordering breaks the static links you have made to the content.
I think we will have to find a better fix for you to make links work "permanently" regardless of re-ordering. Can you send me FTP information and I'll suggest a solution after I do a little testing.