@David Broggy - Thanks for the question and using MS Q&A platform.
Unfortunately, there is no option to clone a scan rule set available in Microsoft Purview.
Appreciate if you could share the feedback on our feedback channel. Which would be open for the user community to upvote & comment on. This allows our product teams to effectively prioritize your request against our existing feature backlog and gives insight into the potential impact of implementing the suggested feature.
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