I have a same problem:

<http://ursine.ca/cgi-bin/dwww/usr/share/doc/p7zip-full/DOCS/MANUAL/>

I try to scan this link 
(this is a simple page, but the files extraction is not .html otherwise .htm)

I try to set external links
+*.htm
and 
+*share/doc/p7zip-full/DOCS/MANUAL/*

but not working
only the index.html scaned.