Currently it is not possible to copy exception policies between one clients hosted endpoint portal to another. It appears that currently it is only possible to do so from within a clients deployment.
As an MSP that manages multiple clients', hosted SEP.cloud deployments it would be nice to be able to copy exception polices between the clients that we are managing in our PMC (partner management console - https://manage.symanteccloud.com). It is time consuming to setup these policies and many are able to be slightly adjusted and re-used from one client to another, although without the capability to copy between clients within our PMC it is currently not possible to do so and they must be created from scratch on each new clients deployment.