You need to take the item down to ZERO QOH so that it is forced to start calculating Avg Cost all over again.
- Go to Inventory List screen, enter the part number and click Search.
- With the selected part highlighted, click on Edit to open the inventory item. Make note of the current QOH (Quantity On Hand).
- Change the On Hand quantity down to 0 [zero] and then click OK to save this change. (you can skip through the manual change warning)
- Click on Edit to open the same part item again; change the On Hand back to the previous figure and click OK. (skip the manual change warning again)
As long as the QOH remains above zero, the average cost will continue to calculate.