Whenever my web deployment project builds, the date and time of the files it creates in the OuputPath have the current Date and Time.  This is not really good.  Shouldnt the files have the date and time that they were modified? 

When we do an actual deployment to production we dont actually copy every single file. We only copy files that have changed. Our site is a very big public site so replacing every file is a no go.  How can I get the Web Deployment project perservet the corret date/time of the file?

Thanks.