There is a backup, but it's not for restoring partial things like versions. Your admins should be able to get you a backup, which you'll then have to load into a test system to take a look at.
See how to use Jira on the go! Demo Den Episode 5 is here: meet Jira Mobile with Jira Product Manager Rayen Magpantay. Demo Den is in our monthly series where a Jira PM demonstrates...
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