Pasquale,
Yes, changing the Policy Version from 4.1.1 to 4.1.3 brought forward the configuration for the Group successfully - no problems. However any Overrides at a cluster level were removed!
For example, we have a Group called Canada-West. In this group we have multiple clusters registering from different cities (Cluster-VAN, Cluster-EDM, ClusterCAL,...) all of which have the same Networks configured from the Group level so that we have consitent networks at all sites. However, site Cluster-EDM needs a unique network only at their site, and so we set it up at the cluster level - this now becomes an Override at this cluster.
This is the problem - Overrides at the cluster level were removed when migrating to a newer Policy version - frustrating! So now we need to recreate all the overrides specific to each cluster and hope that our documenation is up to date for this to happen seamlessly :).