How to destroy meeting reports?

Hello,

We use Zoom for focus groups for our academic research.  We have a confidentiality requirement to scrub all participant names from all information, data, and files related to the research.  However, we've noticed that in our account, the meeting reports contain the participants' original names (before we changed them to assigned code names during the meeting).  We cannot find a way to destroy the meeting reports.  Please advise.  How can we destroy or anonymize the meeting reports?  We don't want to download the meeting reports: we just want to remove them from our Zoom account to tie up any loose ends and ensure there is no place at all where our participants' names are identified.