Write Related record types with One Single Write Records Node

Hi all,

May I please ask for some guidance here?

I've got three record types:

• Consultant 
• Consultant Recipients 
• Consultant Emails

To ensure data accuracy, I want to write all records records at the same. That way if the Consultant Certification write failed, there wouldn't be an entry in the Consultant Recipients  or Consultant Emails and vice-versa.

Based on the following documentation is possible to do in one single Write Records Node: https://docs.appian.com/suite/help/24.4/Write_Records_Smart_Service.html#_

But when I try this, I see the related data in the interface itself under the main Consultant record - but when I pass it in the PM the related data shows as null.

Thank you so much!