CONFIGURATION DELETE PORTAL is not user friendly, it is resource intensive to use. This is not what we were expecting to get and we requested ability to Delete what was migrated. Delete is not supported thru CMA, but DELETE is needed to cleanup primary objects. For production we can't just do a manual delete online because of sox security concerns.
Configuration delete portal requires us to identify the CMA Migration data set id that inserted or updated the object that needs to be deleted. It would be faster if we can enter the object/MO and pk information of what is needed to be deleted and let the portal provide the information of which mds if any is available.