Issue title: Apparent discrepancy for September North Dakota Policies
 Issue body: There's a period of about 9 days where several policies switch to 0's, and then revert to previous assessment, and no notes explaining the shift and return.


![Screen Shot 2020-11-17 at 3 30 32 PM](https://user-images.githubusercontent.com/52681848/99463617-03bbd880-28eb-11eb-828f-8fe428945b37.png)

 Comments: 
 Comment 0: Hi @anne-Matri, 

Thanks for pointing this out! These are highlighted internally and we've passed this on to our review team. We'll keep this issue open and update this space once we're confident this is sorted. 

Thanks!
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