I have just upgraded to v 3.9.1
I converted the store by using just specifying https in the config files and the following code in .htaccess
RewriteCond %{HTTP:X-Forwarded-Proto} !https
RewriteCond %{HTTPS} off
RewriteRule ^ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
I have a wordpress blog on the site and this is now generating https urls in the sitemap but the zencart ones are http as per the link
https://www.saving-light-bulbs.co.uk...approducts.xml
Have you any ideas and a link showing https urls?