Sal Ferrarello

Sometimes when replying to a comment, I fail to reply and instead create a new 
comment. This prevents the comment thread from displaying properly. In the 
past, I’ve fixed this directly in the database. This plugin, allows me to fix 
it from the backend comment edit screen.
There are other plugins with similar functionality, however they either worked differently than I prefer or included additional functionality. One of these other plugins may meet your needs better.
<ul>
<li><a href="https://wordpress.org/plugins/change-comment-parent/" rel="ugc">Change Comment Parent</a> allows you to modify the parent comment by clicking on the comments on the front-end.</li>
<li><a href="https://wordpress.org/plugins/yoast-comment-hacks/" rel="ugc">Yoast Comment Hacks</a> includes many different pieces of comment related functionality, this is one of them.</li>
</ul>
<h4>Image Credit</h4>
<a href="https://pixabay.com/en/speech-bubbles-dialog-comments-talk-305824/" rel="nofollow ugc">Pixabay</a>
<h4>Author</h4>
Built by <a href="http://salferrarello.com/" rel="nofollow ugc">Sal Ferrarello</a> / <a href="http://twitter.com/salcode" rel="nofollow ugc">@salcode</a>

Modify Comment Parent


about comments parent issue, I wrote a topic here: wordpress.org/support/topic/any-way-to-move-comments/#post-17222049



finally, fixed with this plugin.


work as expected, finally!

Add a "Parent Comment ID" field to the backend comment edit page.

Denis Yanchevskiy

DCO Comment Attachment allows your visitors to attach images, videos, audios, documents and other files with their comments. They will also be able to automatically embed links from Youtube, Facebook, Twitter and other services in the comment text.
With plugin settings you can:
<ul>
<li>Limit the maximum file upload size.</li>
<li>Make an attachment required.</li>
<li>Specify whether the attachment will be embedded or displayed as a link.</li>
<li>Enable/Disable autoembed links (like Youtube, Facebook, Twitter, etc.) in the comment text.</li>
<li>Select an attachment image size from thumbnails available in your WordPress install.</li>
<li>Link a thumbnail to a full-size image with lightbox plugins support (see <a href="#faq" rel="nofollow ugc">FAQ</a> for details).</li>
<li>Open a full-size image in a new tab or link thumbnail to the attachment page.</li>
<li>Enable/Disable multiple upload.</li>
<li>Combine images to gallery.</li>
<li>Select an attachment image size for the images gallery.</li>
<li>Restrict attachment file types.</li>
<li>Decide who will be able to upload attachments: all users or only logged users.</li>
<li>Manually moderate comments with attachments.</li>
</ul>
You can also:
<ul>
<li>Add, replace or delete an attachment from a comment on the Edit Comment screen.</li>
<li>Attach an unlimited number of attachments to the comment in the admin panel.</li>
<li>Delete an attachment from a specific comment or bulk delete attachments from comments on the Comments screen.</li>
<li>Display attachments attached to comments to the current post (or a specific post) with the <code>[dco_ca]</code> shortcode. You can also filter by type. See <a href="#faq" rel="nofollow ugc">FAQ</a> for details.</li>
</ul>
Attachments are uploaded to the WordPress Media Library and deleted along with the comment (if this is set in the settings).
REST API is supported.
DCO Comment Attachment is also available on <a href="https://github.com/yadenis/DCO-Comment-Attachment" rel="nofollow ugc">GitHub</a>.

DCO Comment Attachment

Allows your visitors to attach files with their comments

Modify Comment Parent vs DCO Comment Attachment