Thanks for your response. To clarify, this is an Option C contract and as the effect of the notification and subsequent quotation is not to reduce the prices clause 63.11 does not apply here in my opinion.
My contention is that as per clause 60.1(1) a contractor proposed change in the WI if accepted does not constitute a CE except where clause 63.11 applies. In addition, this particular event does not fall under clause 80.1 in the contract and the Schedule of Employer’s Risks. Therefore my position is that the Notification of Compensation Event by the Contractor and its acceptance by the PM are acts not in accordance with the contract (clause 10.1) and should be set aside nullified.
I would be grateful for your opinion. Many thanks.