How do I insert the additional content (imprint, delivery ...) into the Order Complete mail template?

Hey,

I have created a template for “Order Complete” with the Email Designer. This works great in the order process. However, what is missing now are the additional WooCommerce texts that are attached in the original template (e.g. imprint, delivery terms …).

In the original template this should be this code:

/**
 * Show user-defined additional content - this is set in each email's settings.
 */
if ( $additional_content ) {
	echo wp_kses_post( wpautop( wptexturize( $additional_content ) ) );
}

How do I add this to the new Mail Template?

Mario