For all Earned Value Methods (EVMs) except BCWP Entry, if you change the BCWP Base Unit and recalculate BCWP, the recalculated BCWP will reflect the new base unit. If you change the BCWP Base Unit, we recommend you recalculate the weights for the milestones in accordance with the new Base Unit in addition to recalculating BCWP.
If a WBS element has an earned value method of BCWP Entry and you change the BCWP Base Unit, the direct entry values in the BCWP table must be recalculated to reflect the new BCWP Base Unit. The % Complete field must be filled in for this calculation to take place, which means BCWP must have been previously calculated filling the % Complete field with a value.
If you have to change the base unit for a WBS element with an EVM of BCWP Entry, complete the following steps:
Be sure BCWP has been calculated for all WBS elements.
Change the base unit.
Recalculate BCWP. MPM will recalculate BCWP in the new base unit and store the value accordingly.
Modifying Milestone Information for Work in Progress
Changing an Earned Value Method (EVM)