The URL's above are exactly the same. I am totally lost on what you trying to say here.
What do you mean when you say you click on the next link?
Note the generated xml files are not intended for you or anyone else to open/view or navigate in a browser.
They are for Google software to scan. ;-)
Generate the files, ping Google, then log into your Webmasters account the next day to see the results.
I suggest you log into your Google Webmasters account and review the basic help documentation ;-)
Woody