Refresh a section from a child harness without refreshing the current harness
I have harness A which contains harness B and harness C. Harness C contains a section with a dynamic group layout, each of these can be selected to change the page context and section name displayed in harness C.. When a button is clicked in harness C I want to launch B and run an activity to update the dynamic group layout.
This is not working as expected. During development after adding Harness B to the Screen Layout below Pega changes the formatting of the screen and only allows me to edit B, no error is throw but the behaviour seems unusual. At runtime when an item in Harness B is selected harness C overrides the entire portal and doesn't display the relevant section.
Can anyone advise on how to achieve this interaction? Harness B should essentially act as a dynamic menu that allows the user to update Harness C without refreshing the contents in each newly displayed harness. Much like the Recents part of the navigation tab in pega itself.