> I wrote a automation script to automate the download
> process.Once the automation completed, i found out
> that the index.html was not updated, it only updated

I assume you're using the command line Httrack, and not the GUI WinHttrack.

Did you add the flag to make/remake the index?-I *make an index (I0 don't
make) (--index)

<http://www.httrack.com/html/fcguide.html>