RadGridView AddNewBoundRowBeforeEdit on Child Template

[Jeff]

I have some customized functionality I am using in a grid which depends on AddNewBoundRowBeforeEdit which works perfectly when the grid id bound to a flat list of my business objects. I have a requirement now to nest these records in the grid in hierarchy mode, where my same functionality will be used in the child template. It seems that this property is only available on a MasterGridViewTemplate and can not be set on GridViewTemplate instances that are added through a manual relation. Is there a technical reason why child templates can't have this flag and functionality? Is there any way to effectively get that behavior in child template where the bound data object gets created and attached to the row's DataBoundItem property before editing a new row?