A reclassification query at assessment does not have to mean a demurrage clock. It means the paperwork has to answer a question it was not written for yet.
The file that clears fastest is the one where the coordinator already has the technical write-up, the composition breakdown and a prior ruling on file before the query is raised, not after. That is the difference between a same-day reply and a three-day one.
When a heading genuinely changes, we re-run the duty calculation against the revised classification before we tell you the number has moved, so the figure you get is the one that will actually clear, not a placeholder pending a second correction.