Hi @Caroll Mitchell,
Based on your problem description, I tried to implement your problem using flows or calculated formula columns, but neither of them solved your problem.
It doesn't make sense for MS List columns to record historical version values to multiple lines of text. Because we can check the historical version to know how the content has changed and how it was changed.
Please accept my sincerely apologize for any in convenience this may cause. Thank you for your kind understanding.
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