You can also use the Flightplan Generator
http://oscar.bouwmans.name/FlightGear/aiscenario/ to create a scenario of the taxi routes and parking positions then copy/paste the relevant part of the results into Taxidraw.
A word of warning about Taxidraw, you may get random crashes, usually when trying to delete a lot of objects or having an object selected when exporting AI Network. This last type of crash will most likely corrupt the groundnet .xml file so it is best to export often and to a new file each time i.e. LYBE-01, LYBE-02, LYBE-03 etc. this way you will not lose to much work if it does crash.