About 2/3s of the fields had gone... I saved the project several times and build it several times so they should be there. I didn't forget to save because I switch between AH and TE often closing each one of them.
I attach the sources of the terrain (also I removed textures from the sources to reduce the file size) you can also note that in fld file there are still reference to the delete fields.
Note if you need compiled res file that was generated from the sources I can send it as well. (It is just too big to attach)