Hi, 
This is a question regarding updating an existing 
mirror. If during an update a previously mirrored file 
is referenced (as it was in the original mirror) but 
for some reason (maybe server trouble or file is 
temporarily unavailable) the server returns a 404 
error for the file, HTTrack overwrites the original 
file with a 404 message file. This is done even if 
the -X0 option is given.

Is there any way to prevent this?
john