To answer your first question: the PM has no power to change the durations etc. in your Accepted Programme. He/she can only accept or not accept it and, if the latter, state the reasons. In assessing CE quotations, he/she uses the Accepted Programme as the basis for assessing delays directly under 63.3 and indirectly the change in Defined Costs (DC) by reference to what you were planning do before the CE and hence planned resources and then the change in resources as a result fo the CE (which are then priced up to give the change in DC).
Because the PM is impacting a modified version of the last Accepted Programme - not the actual Accepted Programme - he is incorrectly the compensation event. He should be assessing it in accordance with clause 63.3 (NEC3 ECC) or 63.5 (NEC4 ECC), neither of which contain the word 'modified' (or equivalent) before the words "Accepted Programme".
I have to say, if what you say is correct, I have not come across a PM so brazenly making up to suit his perspective before !
Because the PM is impacting a modified version of the last Accepted Programme - not the actual Accepted Programme - he is incorrectly the compensation event. He should be assessing it in accordance with clause 63.3 (NEC3 ECC) or 63.5 (NEC4 ECC), neither of which contain the word 'modified' (or equivalent) before the words "Accepted Programme".
I have to say, if what you say is correct, I have not come across a PM so brazenly making up to suit his perspective before !