Error - Import Setup Data from CSV File - Project Rate Schedule Line.

Summary

Error Details : This object was already processed

Content

I downloaded the CSV package for importing PRoject Rate schedules and updated the CSV files in it.  Initially the process ended error by reason of duplicate email ids for employees.  I then changed the CSV file and tried uploading this.  From then on, whatever I do I get the same error message.  

Should I be deleting some records from business objects tables.  Please help

Version

20A

Code Snippet

Business object: Project Rate Schedule Line. Status: Completed with errors. Status details: This object was already processed. The import or export details were listed under the Project Rate Schedule business object.

Total Objects Processed: 2

Total Objects Succeeded: 0

Total Objects Failed: 2

Total Objects with Warnings: 0

Total Objects for External Loading: 0