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**One more thing to know that, sitemap2.xml have  all redirected page url(All those urls are redirected to new pages). ** An XML sitemap (or any sitemap you submit to a search engine) is supposed to contain a list of the final URLs you wish to be indexed. You should not include any pages blocked by robots.txt, 404 pages, redirected pages, etc. If I am understanding your question, you submitted 17k pages which are redirected to other URLs. In that case, none of those 17k pages would get indexed and search engines will start to learn to ignore your sitemaps as they are not helpful.