[gutvol-d] Help needed in keeping the modified dates in FileZilla for PG-errata

I've been told that some PG-errata users are able to retain the modified date in FileZilla in Windows OS. How does someone do that? I've noticed that the created and accessed dates are blank on the PG book files I've looked at so far. For all of the files downloaded with FileZilla, Windows sets all three dates to the now date and time. Cheers, Rick