Any way to update Labor Notes on adjustment without a Labor Header record?

We have a Labor Note from an adjustment done via a nonconformance that contains corrupt data. User inadvertently pasted an entire excel doc into the Nonconformance Comments/Labor Notes which is causing issues with our BAQs.

I am able to update the Nonconformance Comment via DMT but am not having any luck updating the Labor Notes in DMT or via an updatable BAQ. Seems the TE Labor Detail No Header in DMT is looking for a match on the Labor Header and this adjustment does not have a Labor Header record - it only has a Labor Detail record. Also seeing same issue with updateable BAQ.

Anyone have any suggestions?