Re: location of session data in 4.3.6
                Configuration (in any version) is stored either in registry 
For details see:
https://winscp.net/eng/docs/config
        HKEY_CURRENT_USER\Software\Martin Prikryl\WinSCP 2\ or in an INI file in the same folder, where WinSCP executable is.
For details see:
https://winscp.net/eng/docs/config