There are only two areas where the cost of lack of an early warning comes into play. Under Disallowed Cost definition, if a cost materialises only because an early warning was not notified then any resultant cost (that could otherwise have been avoided) could be disallowed.
Secondly and for all options, if a compensation event is notified, under clause 61.5 if the PM agrees it is a compensation event but that an early warning was not issued that should have been, then the lack of early warning can be taken into account when assessing the compensation event. The lack of early warning has to be communicated when the quote is requested - it cant be notified afterwards when the quote has been issued.
As Andrew says - not sure either of these apply in this situation.