Automatic mapping Data Sources in Dashboard Data

Hi! I'm wondering why when I load a 2nd dataset in Dashboard Data (CX Dashboard project) Qualtrics fails to map some variables while doing fine on others. I know that I can adjust them manually, but it is time consuming to do it every time. Am I missing something?

1. It happens for both Open Text and Text Set.
2. The 2 surveys are identical
3. The 2 surveys have both about 70 test responents