What is Top-Down estimating?

Comparison with a Top-Down Method

TruePlanning™ from Price® Systems Inc. in short

Thru Cost Models, this software application enables estimators to generate cost proposals using reliable Top-Down estimating based on correlations to the scope and complexity of new projects.

Principle used for exchanges. Why must the WBS be modified only in QDV?

The two-way exchanges are based on a file with a tpqdv format. To preserve the structural view, modify the WBS under the TPViewer.