You can disable 301 auto-redirects to ensure that all bots can reach correctly sitemaps links for XML format
and documents. If 301 redirects are active, XML documents could appear embedded inside the HTML
template, resulting in non-valid documents for Google and other bots such as Bing that doesn't support 301
HTTP redirects.
Choose the tab 'Advanced' and turn to 'No' the setting named '301 redirect from non-sef to sef URL '