The forecast should be viewed and validated before the variance are submitted for approval.
The review of a revised New EAC is strictly necessary only at this point in the forecasting process, if the project has cost control objects with Time-Phased Forecast as forecast method and costs for those cost control objects were manually spread in the time-phasing screen.
To view the New EAC values, navigate to Forecasts > Multi Project Forecast > Forecast Settings panel.