Once done, save the file format in *.TRK format. Close everything and restart Land/Air, loading the file you just saved. Do right click on the Track and select the option 'Save as...' changing the format from *.TRK to *.BTRK format. You have completed the e-Roadbook.
NOTE: You must try not to lose/delete never the file *.TRK, as the *.BTRK is not editable. So if you want to change some parameter of the e-Roadbook, you must modify the file *.TRK and then save it back to *.BTRK, so that it links the track with the associated files.