Oops, .fhm is for maps! I apologize. I, too, am a seasoned member (8 years since July)
I am really unsure on why it's not showing up? Exporting, placing in the Presets folder, the Use Preset button... all of that you've done. I am sorry I cannot be anymore help to you! I am just as confused as you are.
EDIT: Have they put the preset file into the Presets folder, not exports?