Revaluation of stock open balance

Hi experts,

one of my customers is using continuous stock with moving average method at warehouse level.

the stock open balances were registered in january with many errors in quantities and values.

Now they want to correct those values.

we try to use revaluation function, but it seems not useful due it consider always the current stock.

if we use good receipts, we can increas quantities and value but we change the item cost too.

if we use good issues, we can reduce quantities but the value depends on the current cost.

can you help me?

thanks