I keep my own log separately. When I had this PC problem happen I used the data I had written in my own log to recreate each pilot. Of course the recreated pilot in WOFF has no career listed. Whereas a pilot may have 140 hours behind him, the new WOFF log only shows the 4 or so hours I've flown since starting him over. I can recreate the mission, start it and then exit, and then add the details using the Log Editor, but it places it after the missions I'm flying now. The older recreated missions show up after the recently-flown missions.