@IainTollemache a great article from @Chunzhi_Hong! The key thing here is we are not copying the information down into the child, you wouldn't want to do this. By creating a case reference on your child case, you can then access all the views and data from your parent to show how you like.

• I've also seen asks about showing parent case information in Insights, so you should check out this article, you'll need an association to do that. https://support.pega.com/discussion/some-insights-insights-and-explore-…

Case Hierarchy in '25

The Constellation Design System's primary way of interacting with a Parent Case if via the Breadcrumb trail in top left

In '25 they are adding a new widget, to help navigate more complex hierarchies. 

This will show the cases, hierarchies and allow you to use the Preview capability to see more details about that case.