Hi,

No, there isn't a functionality like a subscription suspension, which will send, when the subscription is resumed, only the new data since the last message sent before the suspension.
You can only unsubscribe an item and subscribe it again, but in this case you may receive as snapshot also messages received in the previous subscription session.
Maybe it is sufficient for your scenario to reduce the message frequency and than increase it again. In this case you may still receive messages but most of them will be received when the frequency is set to high.


hth
Marco