Why Import mapping (JSON) generates empty entity from arrays

I use an API call and its JSON structure consists of arrays as attributes. When I use Import Mapping and select all attributes to import, it generates empty entities because of arrays. How the empty entity can be used? what is its usage? I can deselect the array when I create import mapping and everything will be the same, just without empty entities. So what is the point?
1 answers

You can just unselect the array object in your import mapping.