Attributes Add-On Issue

I have the Attributes add-on installed. The CSV I’m trying to import has 329 lines. I set up the headers, which match the attribute field names, and upload the file. The plugin goes through all 329 lines, says it’s done, but the attribute values never get placed into the database.

My CSV file has 4 columns, one for each of the attributes I’m trying to load. I never receive any sort of error message during the import process.

Is there something else I should have inside my CSV?

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