@honeybear this should help you.
PS: If you use Theme Persona. You have Settings under ACP -> Plugins -> Theme Persona
I moved some categories into another one
If I remembered well, in child 2, I did something like "copy he parameters of the child3"
Now I can't see Parent and children. (Bu I see titles containers in children in home).
When I clic on a title, I have no error and cant reach it.
I really don't know how to debug it or get back my datas. There is no error in logs.
Some tips would be precious to me...
Ok I found pfff...
My "Parent" had as parent, "Parent". So I removed it thanks to http://.../admin/manage/categories/* urls...
Would be great to be forbidden or something logged