An event (client delay) has happen in Feb 15 which has had an impact on the critical path moving the planned completion from Mid July to Mid September. A EW has been raised but no NCE has been raised or PMI issued at this point. The CE was then assessed in June by the contractor (The lateness of assessment was due to the event evolving and was agreed between client & contractor to wait until the event become more clear and the correct solution could be used for the assessment, rightly or wrongly).
During this time between the event and the actual assessment ( Feb to June) some of the normal works dates, which was the previous critical path back in Feb was delayed until the end of Aug but still remained non critical (Contractors delay).
The two questions I have are
Should the assessment be made as in everything forward of the event date (Feb) is a forecast or the forecasting should be from the point of the assessment (June) ?
Does the delay of the normal works (non critical) have an effect on the prelim cost or is this just using the total float created by client delay event.