Sitemap for https Ecommerce Site

Question

I have few queries related to XML sitemap for better SEO. I'm having an ecommerce site with more than 30000 products. The site can be accessed via https as well as http.

1. While submitting xml sitemap to google, which is preferable? xml sitemap with https link or sitemap with http links. Which would be efficient?

2. Also can I have sitemap for both https and http links?

3. Since I have large database of products, I had to break sitemaps separately for products (5000 links in each sitemap), category sitemap and a common pages sitemap and finally an index sitemap containing all other sitemap links. Is it acceptable?

4. How to tell google to delete old links that was crawled during previous sitemap submission ,and index the latest links in sitemap?

Please advice.

Thanks

Answer 1

Ad question 4:

If you have a web page that you just deleted but it is still showing up in your custom search results, and it is very important to you that it does not show up in search results as soon as possible; or if one of your web pages contains inappropriate content and you want to block it immediately while taking it down, you can prefix the URL with a "-" symbol, and submit it in the On-demand indexing using individual URLs section, like this:

- http://www.example.com/outdated.html

Source: https://developers.google.com/custom-search/docs/indexing

Have you tried Google Webmasters Tools? That and it's docs might help you.