It's a script, yiss,
arma 3 samples:
look for VM_s-P3D_Export.mcr
It's a macroscript so you install it like so: http://www.scriptspot.com/files/Run&Install_MacroScript.wmv
To use the script.
Select the geo you would like to export, then press the save as button, save it as anything BUT 'temp.txt' and make sure its save to somewhere you'll remember.
Then press export
Max will freeze, don't worry, it's doing its thing, when it becomes responsive again you're good to try and import the file
in OB, go to "import"
"universal BIstudio TXT" is the file type you want find the file you named earlier and attempt to import it.
if you get an exception, clear the model materials in max, add an edit poly modifier, then convert to editable poly, then retry.