Sorry, maybe I'm missing something very obvious here:
I have a couple of hundreds html files in public:/oldsite (those are downloaded, cleaned with script and tidy'ed).
I'm trying load them with: Attached to: [none] / Periodic import: off / Import on submission
Fetcher: File upload / Parser: XPath HTML parser / Node processor
When I run importer, I get only one new node created and xxx-1 updated (xxx is the number of files in oldsite directory).