I’ve found, to my dismay, that iOS 7’s Home screen editing has a very finite number of moves it will allow, before it dumps all of your changes and reverts back to what the menu structure was originally. So if you start making changes, and you don’t occasionally press the home button to save them, it appears the editor’s buffers fill up, and it just loses all of the changes since the last save.

It would be nice if there were a warning when getting close to the buffer limit.