so the lodgement receipts you are talking about are different then, because the lodgement receipts that I receive do not record weight or dimensions ??

Mine do, I'm looking at one that I lodged today that says 'up to 1kg (scale)'. No it doesn't contain cubed dimensions (notwithstanding that it's under 1kg and wouldn't be cubed anyway), it was a throwaway comment but I'm sure you already know this 🙂