How IPV will be cleared in an org with FIFO costing?

Hi,

We have FIFO cost method setup in an org, when there is a price variance between PO and Invoice, it's been coded(debited) to IPV(Invoice Price Variance) account. I want to know how the IPV account will be cleared? do we have any program similar to "Transfer Invoice Variance to Inventory Valuation" exists for average cost? as our client want the IPV account to be zero balance at period/year ending.

Thanks,

-Kamal