Why does receiving in a PO not update IN-L-A  (enter standard costs)?
 
How does the last cost get updated in IN-A?  I dont think they always do  
 
Thanks,
Laura  

If you are set up to use Standard Costs, then the PO will be received AT standard cost (as manually entered) regardless what you pay for the items.  
 
If you are using Average, LIFO or FIFO, then Standard Cost is just a reference. I believe the only thing it's actually used for in DBA/Evo is in the Estimating module (and there CAN be separate costs entered to be used only in Estimates).