Currently, if a user has set their epics or features to inherit dates from their children then when creating an epic or feature the due date is ignored and replaced with the date of the child records or is forced to be blank if no child records exist. this is expected but it's not a great experience for the user as the due date then does not show up in the history to retrieve. Perhaps if the workspace has set epics and features to inherit dates from child records then the layout should not provide the option to show the start and due date on the create layout.