Data Migration Objects templates

Hello experts,

Do the Objects Templates need to be filled manually once they are downloaded? I have looked for in many places and cannot find the answer even in an openSAP course.

I read this article; https://blogs.sap.com/2020/04/18/sap-s-4hana-migration-cockpit/ which is very interesting but I cannot find the answer.

Following these steps:

• Prepare your migration project
• Download the migration templates
• Prepare your data for migration --------> on this step I have the doubt, what do you mean with this?

I really appreciate your help and thanks in advance

Ivonne