I've been out-of-world for awhile now and came back to find the patch had broken the map (.FHZ no longer works post-patch!) and noticed in my email notifications people were still downloading it. At the moment it doesn't look like I'll be able to convert it to the new format, Unless someone has a way to turn a .fhz into an exported new map. I don't have the original files I used to create the map sadly.
So, I'll be making a newer version of the map soon, hopefully this time with some new meshes hopefully. Again, Sorry for the inconvinience.. :/