Cost Estimate by Material Valuation Type

Hi,

Anybody knows about the impact of cost estimate (or standard cost) by material Valuation Type level instead of by Plant level? Especially how is the impact on Moving Average Price calculatio (is it calculated for both valuation type level and plant level?) and the inpact on Production order confirmation (which value will be taken for finish product inventory? Is it Plant level standard price or valuation type standard price?)

Thanks in advance