Dear JA
The new data source provides all the cost related data ( Costs of WBS, Network etc ) in a single data source instead of using the multiple data sources of 0CO_OM*.
I am yet to use 0PS_10 & 20 and therefore cannot provide you with more details. But it would be also better that you have 0CO_OM* datasource implemented in your system
Regards
Gajesh