I am MSFS2020 Steam user. I have been able the restore my game settings and logbook after losing these settings due restart after " packages out-of-date warning".
My solution as steam user:
First stop MSFS2020 and stop the Steam app.
Go to Steam installation folder probably C:/Programs Files(x86)/Steam/userdata/STEAMID/125xxxxxx/remote and replace 3 files with your most recent local backup (hopefully you have one). The 3 files are datausage, kh_logbook, profile_00.
Restart MSFS2020 and the Game settings and your logbook are restored.
Best to often to take a backup of the entire remote folder because also the hardware controller settings are inside.
Succes!