Query Parameter of type objects

Hi, 

I have an API Specification with query parameters of type object. The object is not complex (just a list of sub-parameters - no nested objects) 

Here is the spec: 

parameters:
  - name: sicBankMasterFilterParams
    in: query
    schema:
      type: object
      properties:
        id:
        type: integer
        activeFrom:
        type: string
        group:
        type: integer
        iid:
        type: integer

 etc... (there is more sub-parameters)

When I import the specification into Swagger UI it does render/display the sub parameters and does not even list the 'overarching' parameter sicBankMasterFilterParams.

When I import the specification into ReadyAPI it does not recognize/understand the sub-parameters . It only provide the 'meta' parameter sicBankMasterFilterParams in my API 

I have tried to add manually the single sub-parameter as query parameter in my API request. But it's not optimal: I cannot sync that automatically with my API Definition. And if I have too many sub-parameters they are by default added to the request without any value and I reach the max url length. 

I cannot create several REST request with only subset of my sub-parameters because the target resource already contains one. 

Any hint on how to solve this?

I am using ReadyAPI 3.20.2