Hi @chad_woodhead 

Weird behavior as I tried to reproduce this into my environment on a delta external table as well as on a managed table. And I'm not able to reproduce what you encountered.

Which DBR version are you using ? I used the latest DBR 14.3 LTS to make my tests. What is the file format used (is it delta ?)

In the meantime, I suggest to raise a ticket to our support as there will be a second investigation track opened.

HTH.

Laurent