We finally figured this out in the discord (thanks to both Garmichael and Glain!)
Instructions:
- Extract the files in the MAP folder from a FFT ISO using CDMage or another program
- Extract the attached Executable to the same place you extracted the MAP files
- Open Command prompt
- Change directory to that file location
- type in the following (replace the NNN with the map number you want to export): fft_map_to_obj MAPNNN
- A number of files will generate in the file path
- The .obj files should be able to be imported into any modern 3D Software package
You can watch the process here: Twitch Highlight (https://www.twitch.tv/videos/979933933)