Specifies whether the current model settings should be used when recreating the forecasts or if the forecasts should be made by the model settings that was running during the period evaluated. These historical model settings are fetched from the prog-files saved for the evaluated period. For each sub-period or interval of length ‘interval length’ in the extract settings, a corresponding model valid in the ‘search period’ related to the interval start is searched for and used when forecasting the interval. So the program won’t look for any model setting changes made during the sub-period evaluated.