> cat veridelta.yaml
primary_keys: [id]
source:
  path: legacy.csv
target:
  path: modern.csv
> cat legacy.csv
id,status,amount
1,open,10.0
2,closed,20.5
3,open,7.25
> cat modern.csv
id,status,amount
1,open,10.0
2,shipped,20.5
4,open,7.25
