In this tool you can upload the excel file (from eDoz) with the list of all students participating the exam and it will generate the correct CSV file needed for anonymization.
Information on how to randomize (by versioning) MC questions can be found in the
documentation and the respective
Wiki.
How to use
wait a bit (about 15 sec) until the page is loaded completely (meanwhile enjoy the video)
choose the excel file downloaded from eDoz (Communication/Lists -> Performance assessments - Registrations & Results -> *your exam* -> Export data [excel])
click on "Upload & Process"
as soon as you see the preview, you can download the generated file