Hi @zweitze!
Ahh yes, so if you’re looking to see the connection between subitems and their parent items, I would recommend querying the parent item column_values to see the connection this way.
Here is a thread that outlined this “matching” process: Updating subitems via API.
Great question! In this case, an announcement will be made both in our community, as well as on our API documentation.
If you have any further questions, please consider opening a new thread!
Thank you~