by VelvetBlues.com on WordPress.org
Easily move comments between posts and pages, change comment threading, and assign comments to different authors.

Extra fields added to the standard WordPress comment editing screen. screenshot-1.png
Moving comments between posts or parents can be a chore, especially if your blog uses threaded comments. WordPress Move Comments simplifies this process by enabling users to easily change the comment’s post or page, the parent comment, and the comment author. Edits can be made via both Quick Edit and the simpler single-comment edit screen.
Get support for this plugin by going to the WordPress Move Comments plugin page. Post all questions as comments.