See clip from Attorney Rajiv S. Khanna's conference call video that addresses this question.
Have you been using E-Verify more than 10 years?
If yes, please download the new “Historic Records Report” before Dec 31, 2014.
Effective January 1, 2015, E-Verify transaction records more than 10 years old will be deleted from the system. You will no longer have access in E-Verify to cases you created prior to December 31, 2004.