NEC3: Should the employer be expected to revise quotations based on the latest schedules (as claimed by the contractor) or should clause 65.2 apply and the quotation remain as previously agreed?

Further to the CECA schedules being updated in September 2019 is has been noticed that we have construction contracts that have continued to use the previous CECA schedule rates when assessing compensation events. Given that quotations for these compensation events have been assessed and accepted/agreed for events that have taken place after September 2019 should the employer be expected to revise quotations based on the latest schedules (as claimed by the contractor) or should clause 65.2 apply and the quotation remain as previously agreed?

if the compensation event has been implemented then no it should not be revised unless by expressed agreement of both parties (and recorded as such) or through dispute process.