No, clause 65.2 is clear that once implemented a CE quotation is not revised, the only exception being where a PM assumption used in the quotation has proven to be incorrect in which case a new CE is raised for the correction so, technically, the quotation is not actually revised.
Whilst it may seem unfair, doing so would mean that all quotations could be opened up because inevitably the quotation will not match the actual Defined Cost + Fee. This would undermine the whole intention of the change process.
Whilst it may seem unfair, doing so would mean that all quotations could be opened up because inevitably the quotation will not match the actual Defined Cost + Fee. This would undermine the whole intention of the change process.