is there anyone who can explain how to go about this?

i am trying to import a motion path from LW into DF4.
i need to have particle emitters following the path.

my problem is that according to the manual, i have to draw a polyline (path?) first in fusion, then select the import LW mot from it's context menu, but it does nothing.
i am assuming then that there is something more to the process.

thanks for the help,