Moving CSS files from body to header in Hummingbird minification

I am trying to move a few css files that are located at the bottom of the body to the header. When I select Header in Hummingbirds minification for these files, they do not move anywhere. They stay in their original position.

These are the files in question.

CSSjs_composer_front
wp-content/plugins/js_composer/assets/css/js_composer.min.css

mpc_icons_font-fa
wp-content/plugins/mpc-massive/assets/fonts/fa/fa.min.css

They are not combined, not minified, just set to be located in the header.