Hi Michael,
There is only one way and the CA expert Guru I call him Vadim has shared and published on the blog written by Alejand done it via the script and here is the link - https://www.sysadmins.lv/retired-msft-blogs/alejacma/how-to-export-issued-certificates-from-a-ca-programatically-powershell.aspx
Just test this in the Dev/Test environment prior to running on Prod.
Hope this helps.
JS
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