Both WordPress and Facebook Comments

The plugin includes existing WordPress comments, disables new WordPress comments, and removes the WordPress comment form in the replacement comment template file.
https://github.com/facebook/wordpress/blob/master/social-plugins/comments.php

Publishers with existing comments before using the Facebook Comment Box social plugin did not want to lose those conversation threads. These comments are output using wp_list_comments() in ordered list style by default.

I want the plugin to not include existing WordPress comments… how do I do that? Thanks!

I want to keep box wordpress to allow post comments to users that not have Facebook.

Is this possible?