Is there an existing issue for this?
Is your feature request related to a problem? Please describe.
If I provide a csv without a header that has 522 rows and select the proper matching fields, the preview only shows 521 rows and the output only has 521 rows as well, missing the top row.
Describe the solution you'd like
@jacobdadams how would you want this to work in regards to selecting columns and letting the app know there is no header?