thanks tyrro,
yes, but that is a single wordpress setup rewrite rules.
i m using ee 3.6.2 had an default yoast seo sitemap rules in wpcommon.conf / wpcommon-php7.conf
rules read as below:
rewrite ^/sitemap.xml$ /sitemap_index.xml permanent;
rewrite ^/([a-z]+)?-?sitemap.xsl$ /index.php?xsl=$1 last;
# Rules for yoast sitemap with wp|wpsubdir|wpsubdomain
rewrite ^.*/sitemap_index.xml$ /index.php?sitemap=1 last;
rewrite ^.*/([^/]+?)-sitemap([0-9]+)?.xml$ /index.php?sitemap=$1&sitemap_n=$2 last;
main site http://domain.com/sitemap_index.xml works fine
http://domain.com/blog/**main-sitemap.xsl** get status 404
