If this is the case, then the situation differs significantly from the crude oil markets. Over the years, there have been stories in the media that the captain doesn’t necessarily know the destination yet when an oil tanker leaves the Middle East heading towards East Asia or Europe. Cargoes are sold en route, and even the same cargo changes ownership multiple times during the journey..
However, pulp is a bulk product similar to crude oil, meaning the risk of being stuck with it is quite low, even if shipped at one’s own risk without an order. But I’m no expert on this.