Are properties with null values included in responseFilter data for child categories?

**This post was created as part of a How to Service Request (SR) 

Summary:

Response Filters: "Response filters provide an alternative way to use the fields and exclude query parameters....Rather than using fields or exclude to explicitly list properties in the URL of a REST call, you can create persistent filters that store the set of properties to include or exclude."

Note: You can add and remove fields based on nested/child categories as well (See documentation below). This question is in regards to those changes/updates.

Question: Regarding properties displayed in the context (Catalog) data, will properties with null values be displayed on child categories? Or will it only show properties with Null values for parent categories?