Uh... It might be too late, but... If you deleted the .FHZ file you have and then re-exported the map in-game, that might work. If you haven't tried it yet.
ALSO ON A TOTALLY SORT OF RANDOM NOTE, I figured out how to use Object Maker, so I imported some stuff from IT, and now my cave has a little shrine with candles and a picture of v.4 Roxy and Aequitas. :3 *Can't spell his name* And also tiny rainbows falling from the ceiling. :'D