Allow system to record stock price differences on direct delivery orders

When processing direct delivery orders in Sage, any variances in stock item prices between PO and invoice are not recorded - even when the system is configured to update stock prices at goods receipt. The variances nominal account is not used at all. This is different from when the PO fulfilment method is set to Stock. One of our clients uses direct delivery extensively and would like the facility to keep track of price variances - especially when prices fluctuate a lot, as is the case currently (December 2022).