You are wrong. Logbook stored also at local computer. In C:\Users%USERNAME%\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\SystemAppData\wgs\
You are wrong. Logbook stored also at local computer. In C:\Users%USERNAME%\AppData\Local\Packages\Microsoft.FlightSimulator_8wekyb3d8bbwe\SystemAppData\wgs\