Statistical data is data that may be important for reporting, but is not personal data.

In the case of manual deletion of an application, a query is made as to whether statistical data should be retained and personal data deleted.
When applications are reduced, personal data is also deleted and statistical data is retained.

This means that data such as postal code, city, position, status change, etc. are retained, but place of birth, birthday, name, etc. are irretrievably deleted from your d.vinci.