P4210 - Zero Price from Order Details Row Exit - Adv Prc Schedule removed on the order detail line.

Is there anyway to stop the Advanced Pricing Schedule being removed at Order Detail level, when Zero Price is selected from Row Exit.

Although the Sales Price is zero, the client wants to automatically  attach an accrual adjustment, at 100% of Cost.

If the Price is overriden on the order line (eg 100 down to 90) the above works fine, when "Apply on Override Price" is set on in the Accrual Adjustment Definition.