NSD Manager keeps old service in memory, even when they are not on the network anymore

Question

I'm using NSD Manager, and according to the documentation, it keeps a list of service found. But I believe it doesn't update it on every new discovery (as in, it doesn't remove unregistered services)

Is there a way to clear the list or force update the list ? I ask this because I'd like to know when a service is not available and with the current behavior, nsd manager will keep discovering the service 30s-1min after it being unregistered.

Thanks.