I have three .lbk data files, 2 on my F drive and one on my C drive. These file sizes are different and I can't tell if the latest one is the one that opens when I launch LBP. How can I launch LBP with a selected file, so that I can figure out the latest and clean out the harddrives of the outdated ones. BTW the windows search results show the latest files are the smallest sized ones leading me to be confused as to which is the latest and has the most flights saved.