It has the same problem as the Japanese version (and Zooo, for that matter). Every value in the save is set to 0 by default in an emulator (leaving sound and music off, all puzzles locked, date set to 00/00/00 etc), whereas the original cart already has some values saved (which are not saved when the ROM is dumped). if someone could dump the save from a new copy of the game, then it'd work properly with emulators and flashcards.