In most cases I want the roles to be setup manually for objects that were generated by a dynamic model. And in other cases where I do generate the roles, it sometimes also happens that a dynamic generated object is also manually assigned to a role. 

The problem is that when using a staged strategy for the dynamic model, it runs in an error when something does not exist anymore that was assigned to a role. To work around this, I currently have to write code in the dynamic model that deletes roles for everything that does not exists anymore. 

So I would like an option for the dynamic model with a staged strategy to automatically remove roles for something that does not exist anymore in the staged tables. Basically a cascaded delete.