We have recently migrated from Alfresco 3.4.9 to 4.1.5 and do not see updates syncing between two alfresco servers. These servers are not in a cluster. Cache (L1 or L2) does not get reflected or updated as well in other Alfresco server. We are seeing stale node errors as well. Does anyone know if anything has changed between 3.4.9 and 4.1.5 Alfresco server versions?