Hi I'm trying to remove a few child elements from a onetomany relationship. like : | for (Role r : presentRolesToRemove.keySet()) { | focusSubject.getActors().remove(presentRolesToRemove.get(r)); | } | (presentRolesToRemove being a Map<Role,Actor>) But doing a em.merge(focusSubject); does not remove the childs from the database. Should I do a em.delete(presentRolesToRemove.get(r)); explicitely within the for-loop? Or is there annotation to circumvent this manual deletion? Thanks in advance. jeroen. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4066472#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...