Only last sitemap is consumed by Google

[ferdie]

After editing manually my sitemap index file (because the URLs that the tool produced are invalid - missing domain name), I successfully submitted to Google. However, after checking back at Google Webmaster, only the last sitemap from the list in the index seemed to have been consumed.

For Sitemaps 1-5, all reads 0 (zero) URLS in Google Webmaster.

Here is how my sitemp index file (sitemap.xml) looks now:
(I copy-pasted this, and just changed my domain name for security reasons)

<?xml version="1.0" encoding="UTF-8" ?>
- <sitemapindex xmlns="[external links are visible to admins only]" xmlns:xsi="[external links are visible to admins only]" xsi:schemaLocation="[external links are visible to admins only] [external links are visible to admins only]">
- <sitemap>
  <loc>[external links are visible to admins only]</loc>
  <lastmod>2007-12-07T22:33:20+00:00</lastmod>
  </sitemap>
- <sitemap>
  <loc>[external links are visible to admins only]</loc>
  <lastmod>2007-12-07T22:33:20+00:00</lastmod>
  </sitemap>
- <sitemap>
  <loc>[external links are visible to admins only]</loc>
  <lastmod>2007-12-07T22:33:20+00:00</lastmod>
  </sitemap>
- <sitemap>
  <loc>[external links are visible to admins only]</loc>
  <lastmod>2007-12-07T22:33:20+00:00</lastmod>
  </sitemap>
- <sitemap>
  <loc>[external links are visible to admins only]</loc>
  <lastmod>2007-12-07T22:33:20+00:00</lastmod>
  </sitemap>
- <sitemap>
  <loc>[external links are visible to admins only]</loc>
  <lastmod>2007-12-07T22:33:20+00:00</lastmod>
  </sitemap>
  </sitemapindex>

Pls. advise. Thanks.

[admin]

Hello,

are the sitemaps correct though when you open them?

[ferdie]

Yes, they open correctly in IE. I will send you a private message on our sitemaps so you can check too.