Legoman,
As far as I know, Current cost is update only at the receiving point. However, it can be automatically adjusted during voucher maintenance as well. Here is the field help for Field: Current Cost from AP in 3.24 - Inventory Control File.
If Yes, current material cost is updated to reflect AP Rate Variances. These are variances between the supplier invoice cost and the purchase order cost. If No, these price variances are not reflected in current cost.
Current cost may be maintained automatically by the system. This reflects the actual cost incurred and can be compared to your GL (standard) cost. Current cost is updated as Last or Average. It may or may not be affected by actual voucher costs for purchased items.
Regards
Max Viskov
32Soft Inc.