The Auckland Council had submitted a "rates statement" which amounted to a summary of the rates demands made by the council to Ms Bright, which the council claims date back to 2008.
Ms Bright, who represented herself in court, argued this was "not a creature of statute", and the council should have submitted every invoice and rates demand to prove she owed the money.
Judge David Harvey agreed with Auckland Council lawyer James Hassall that it would be allowed as evidence, but only if backed up by copies of the invoices in an "information capsule" annexed to the submission. This was not done.
It then emerged that some of the amounts detailed in the rates summary were not rates-related, but were reverse legal fees the council wants Ms Bright to pay in relation to the long-running court battle.
Mr Hassall admitted the document was "not accurate", and blamed an "over-zealous" council worker for including the amounts on the rates summary.
Judge Harvey said the amounts made up "almost half the claim" on the document.
Ms Bright claimed it "proves this rates statement is fundamentally flawed".
Judge Harvey said he had no choice but to set aside the judgment. But he warned Ms Bright: "You may have won this battle, but the war is not over."