Setting for deactivating unconfirmed costs for purchase returns

There is a setting in POP Settings Order Processing Update Stock Cost Prices and setting of Default Price Update is when Goods Are Received. This deactivates unconfirmed costs for purchase orders. However purchase returns remain unconfirmed (until fully credited). This is an inconsistency and leads to problems with stock valuation. Can there be a further setting to enable purchase returns to behave in a similar manner (e.g. update price update on purchase returns when)? The stock valuation would need to be reduced by the purchase return value and any credit would be written off against the differences nominal (so behaves consistently with purchase orders and record purchase invoice) This is a subtle problem but leads to data inconsistencies with stock valuation and with reconciliation.