Pull files from Box or Dropbox

Hi Stephanie-

Thank you so much for this plugin. I am wondering if it is possible only to convert files from a local server (and directory) or is it possible from a remote directory such as Box or Dropbox.

I am working with a large site and trying to preserve the original date and time, and whenever I transfer the files from either of those two cloud resources to my own server it changes the date and time. Have gone back nd forth with numerous hosts so I wanted to see if I could convert directly from dropbox or box?

Thank you so much.