Which Verification? DxDataBook? Maybe those fields are set to annotate but not load, if they aren't loaded during the verification step the values aren't compared thus they "match" regardless of case or actual value.
What data is case sensitive? Property names, property values? 10m is different from 10M and I would expect them to be separated. Which columns do you have set as Primary? How do you have other columns set for Display? And many more questions. This issue would be better served as an Service Request to Customer Support. We may be able to get your partlist to look like you want even though it doesn't directly do what you want.