Smack save the outgoing stanzas to send them after a reconnection?

how it works ?

i having a issue or maybe its a feature in smack , when i try to send a stanza multiple times looks like smack save it for later if i am not connected to the server, after a reconnect i seeing in the logs multiple outgoings stanzas with the same id and body.

how can i clear this internal queue ?

You could disable stream management. But why do you send a stanza multiple times in the first place?