Most of what I typed into a comment disappeared after editting it.

[Tomislav Stipic]

I've been keeping track of my work's progress in a comment in the ticket I'm working on.

Right now, after I've edited the comment for the Nth time, the comment changed to a state it was never in before and 90% of what I've inputed in that comment is gone. In the comment is a table which had a lot of text and many links in it with a bit more formatting.

What exactly happened? Can I somehow restore my comment to its earlier state? I'm not managing to find a way. All I did was click "Edit" on the comment, and then I inputted a bit more text and closed it.

This has happened to me before when I was using tables and extra formatting inside of them, but the workd I'd lost back then was insignificant.

[said kouzibry]

There is no comment history in Jira, the only way you could get the information back is through a backup, you will need a either access to the servers file system or a plugin like "Home Directory & Database Browser for Jira"

You can open a backup zip, if it's not very big, open the entities.xml (throught notepad++ or similar for visibility) file and search for the issue id until you find the content you lost.

Example : issue="15665"

<Action id="14063" issue="15665" author="admin" type="comment" body="Comment content" created="2020-07-22 20:03:52.624" updateauthor="admin" updated="2020-07-22 20:03:52.624"/>

The easiest way to find the issue ID is to open the ticket and inspect its key, you will see something similar to this

<li><a class="issue-link" data-issue-key="DEMO-9" href="/browse/DEMO-9" id="key-val" rel="15665">DEMO-9</a></li>

where "rel" is the issue ID,

I hope this helps