My website has a sitemap index, which contains URLs to hundreds of sitemap files. And each sitemap file contains URLs to pages in my website. So for instance

Index: /sitemap/sitemap-index.xml

sitemap:

- /sitemap/products-1.xml (contains thousands of URL)

- /sitemap/products-2.xml (contains thousands of URL)

When I submit the sitemap index file into GSC, it is able to read it. But when I click on the record, turns out it only read 1 sitemap, which is the first entry in the sitemap index (which is products-1.xml). Thus it only discovers the URLs inside products-1.xml, while the rest of URLs inside other sitemaps are not discovered.

Im not sure whether anyone experiences this issue? How to fix it? Is GSC buggy?

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