How to preserve file dates when I upload?

Is there a setting to make SmartFTP preserve file dates when I upload? This is important to me for seeing changes.

I can't find a setting.

It's enabled by default. If it doesn't work it's because your server doesn't support this feature.

Thanks, mb. I found out from my server support that you are right. (Best way to preserve file dates is by making a .tar file and upload that, then uncompress. Got all my dates back via shell tar -x of an older public_html.tar file I had on server ).