MTO & Production Order Cost estimate

Hello

We have MTO with Production Order cost estimate for valuating invendtory.But the value of GR is not matching with Production Order cost estmate though strategy is "2"-with which its valuated.The estimate does not have any majaor itemisation except Activity cost-which is unchanged.How do i find the the value with which GR is done.AN order cost estimate no is saved in EBEW.WIll this give me trail of the itemisation with values & how can i get the trail.