Import logs allow you to keep track of the import records. Once you have imported a file, you can view the records and file data in the import logs. The processed and errored files are listed here.
All tab shows all the records whether the records are processed, unprocessed or errored.
You can view the file data by clicking on View Data button.
The processed tab shows only the records which have been successfully processed.
The errored tab shows only the records in which error has occurred. You can view the errors occurred.