Hi, 

I have a very large site that I like to keep locally. It is a very simple
site, a plain HTML index page with subpages, images, video's and a CSS file.
However, when I try and update the site it just seems to start redownloading
the whole site again, even when I know there's only been 1 new page added.

How does httrack decide whether a page/file is new or not? 

Are there any settings that I should be using that would help me? At the
moment I have the project set to 'Update Existing Download' and the only other
thing I found that might help was 'Update Hack'