After migrating a client from Windows Vista Business to Windows 8.1 Professional, they wanted to let me know that they were unable to log straight into their online accounts as the autocomplete data from IE Browser was gone.
Fortunately, I still had the Windows Vista hard drive and was able to export the cookies to a USB Flash drive then import it into Windows 8.1 Professional for use with IE 11.
The functionality that they had on the Vista hard drive is now is restored in Windows 8.1 Professional and goes to show how helpful and dangerous cookies (see my cookie policy) are and to be mindful when sharing a computer in an environment such as a library or classroom.