I'm sorry to say but i tried "dumpdata" with 3 web pages :

1. the page to log in (which you can see as well) : it works perfectly well
2. the home page you get on once you're logged in : it runs without failure
but nothing is dumped into the excel sheet : he finds 9 empty items
3. the page i wanted to work with : same as 2 : also 9 empty items, so it
seems to be the same page, although a different page is seen on the screen

There must be something tricky that i don't understand ???
Does it make sense to try to go to the wanted page by filling in name and
password, and then click 2 buttons automatically ?