This page provides the details to clone an issue along with the respective attachments and comments.
Steps
Select a issue you want to clone in your Jira instance. For example, consider an issue with the attachment and comment as shown in the following image.
In the top of the issue, click More > Clone+.
In the Clone page, select the Copy Attachments and Copy Comments clone options, and the values for all the remaining fields as required.
Click Create.
The issue is cloned as configured and displayed.
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