Can't Change "WinSCP temporary session" time

I changed the settings "Off" in WinSCP "Advanced Site Settings > Connection > Keepalives".
But WinSCP change keepalives time in PuTTY – WinSCP temporary session – "Seconds between keepalives" time when I log in from WinSCP.
How can I turn it off or change it to 0?
In the HP-UX session, PuTTY continues to signal to maintain the connection ^?q.

Thanks for your report.

I have added this issue to the tracker:
Issue 2141 – Turned-off keepaliaves are not propagated to PuTTY

I'm sending you an email with a development version of WinSCP to the address you have used to register on this forum.