8.1.2 Synchronization Editor Superset Handling Update to Null instead of Deleting

Hi there,

i've a question regarding the implementation of a superset handling that nulls values instead of deleting objects.

Let's think of a simple csv-project with the Person table on the Identity Manager side and a two column layout on the csv side.

The object matching is given via Central Account (column 1 in csv). Column 2 in CSV has a property mapping to the column Person.CustomProperty01.

The identity manager side has 100 Person Objects. The CSV has 70 Objects.

In my implementation i do not find a way to Null Person.Customproperty01 for the 30 Objects which are not mapped without postprocessing via script. 

Is there "simple" a way to solve this within the synchronization project?

Thank you.