@Stuart Anderton - Yeah there is no way to mass delete them and there is also no way to setup the Role Permissions using the View, Edit, Create, Full settings. It is all or nothing with FULL if I remember correctly. If you are doing that many CSV imports it is not super difficult to automate the CSV import process. Then you could have the same .csv file in the File Cabinet for the repetitive imports that you could point the script to reuse the same CSV import every time.