The question of 21Th may again “ clean cache”. I’ll put in 
different words, sorry for my English. ¿ Can HTTRACK copy a 
website from the original web server and update the 
intermediate caches or proxies installed by network-
operators? I want change my site with new image/style and  
later force the update of the intermediate caches. 
(Somebody told me about http/1.1, etags, headers etc, but 
I’m not expert)
if yes, how is the httrack configuration?Thanks