[Nsi-wg] Topology versions

Peoples, I have noticed some of the NSA that support dynamic topology retrieval are updating the "version" attribute of the NSA element every time a retrieval occurs. This has the unwanted side effect of appearing to be a new topology each time it is retrieved. If possible, could you only update the "version" attribute after an NSA restart, or when you have had an actual topology change. This will help to reduce the churn in recomputing topology when polling for updates. Thank you, John