Hi all I've recently upgraded from CC3 to CC6.0.11  (6.0.12 did not work due to a server limitation) Store works fine, however I do have an issue with the confirmation emails sent to clients. The default template (File manager, Email templates, Cart: Order Confirmed) works perfectly - emails get sent out, all fields populated, clients receive them. However, if i make any change to either the HTML or Plain text content , nor order confirmation emails are sent out! If for example I