Hmm. Considering I understand correctly, one solution to go about this, would be to change the “Start” node dynamically in runtime, so that the next time the Dialogue starts, it does so from that new “Start” node. To change the “Start” node you would of course need to somehow get a reference to the node you want. The easiest way, would probably be to use Tags on the nodes you want to manage through code.
Here is an example code on how to set the “Start” node of the dialogue to another node which we get by it’s Tag name.
(Node tags can be set in the node inspector by the way).