How does this handle duplicate data?

I have CSV files that could have some fields changed on a daily basis but ultimately the record is still the same. if I were to use this tool how would it handle trying to upload the same data again but with slightly different values, same primary ID though?

No file, test, or entry point is identified. Start by locating the CLI's upload path and reviewing how it compares records with the same primary ID; document the observed behavior when field values change and add a focused test if the repository has coverage for this case.

Written by the indexing model from the issue text.