I've looked on various websites (including the official one) for details regarding this procedure, but unfortunately, there is nothing available. They don't treat this subject in detail, which makes it a little harder to obtain the information you need.
Because of this, I recommend checking the available user guide. It shows some information about the way the software works and additional details about various procedures that can be done in the application.
Download the user guide from here: http://www.freightstream.com/manual/FSAPART1.pdf