How to migrate from the Atlassian Labs Threaded Comments
In case you are migrating from the unsupported Jira Threaded Comments by Atlassian Labs to this app, please follow the steps below for migrating the data:
Uninstall the Threaded Comments by Atlassian Labs add-on.
Install this add-on.
Run the following SQL commands on the Jira database (consider using the Home Directory & Database Browser for Jira)