The easiest solution to this:

• Enter an Accounting Date for the Vendor Bill that matches the Receipt date.

The hardest solution to this:

• Configure a Price Difference Account for the Product Category.
• When the Vendor Bill is recorded, the difference due to exchange rates between Receipt date and Bill date is calculated and posted.
• Record a Landed Cost adjustment equal to the balance posted (every entry shows the PO, the Vendor, the product, the quantity, the price difference in PO currency and the price difference in company currency).
• The product(s) on the receipt you choose will be re-valued to include the difference.
• If you sell products in the mean time, we post to cost of goods for products already delivered.