Hi Slavko,

I'm sorry but I'm a bit confused about the behavior that you expect.

Please, let me consider the sequence from the point of view of the client:
1. Subscribes to the "Abbruzzo" Item in COMMAND mode;
2. receives onSubscription event;
3. receives onItemUpdate (ADD) events for the city of Aquila and Lanciano (isSnapshot return true);
4. receives the onEndOfSnapshot event;
5. receives several onItemUpdate (UPDATE) events for the changes in population count for the city of Aquila and Lanciano (isSnapshot return false);
6. receives an onItemUpdate (ADD) event for the new city of Filetto (isSnapshot return false);
7. receives several onItemUpdate (UPDATE) events for the changes in population count for the city of Aquila, Lanciano and Filetto (isSnapshot return false);

Do you expect something different in the sequence above?