Hi @Zach Flesher ,
it's not the best way and not supported to modify the details directly in the SCSM database.
A better option might be to use PowerShell and the SMlets to get the job done.
In this blog post you will find details to get the object: https://lazywinadmin.com/2016/03/powershellscsm-get-review-activities.html
With a little work it should be possible to get this modified to your requirements -> Modifying the comment of the review.
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Regards
Andreas Baumgarten