> Can HTTRACK copy a 
> website from the original web server and update the 
> intermediate caches or proxies installed by network-
> operators?
Normally this is transparent - ie you can't do much on the 
client side as far as I know. The intermediate proxies 
should "know" that they have to refresh the contents (and 
cache it)
Erase the httrack cache if you want to force a download 
again (ie erase hts-cache/*.zip)