Anyone know if order item quantities be increased after payments have been received?

[Christian Carlow-OFBizzer]

The company that will be using OFBiz needs to be able to add items to an
order after some payments have been received.  Does anyone know if this
functionality is supported yet?  The error I've encountered with the
operation so far is:

Generic Entity Exception occured in deleteByCondition (SQL Exception
while executing the following:DELETE FROM public.ORDER_ADJUSTMENT WHERE
(ORDER_ID = 'WSCO10160' AND (ORDER_ADJUSTMENT_TYPE_ID =
'PROMOTION_ADJUSTMENT' OR ORDER_ADJUSTMENT_TYPE_ID = 'SHIPPING_CHARGES'
OR ORDER_ADJUSTMENT_TYPE_ID = 'SALES_TAX' OR ORDER_ADJUSTMENT_TYPE_ID =
'VAT_TAX' OR ORDER_ADJUSTMENT_TYPE_ID = 'VAT_PRICE_CORRECT')) (ERROR:
update or delete on table "order_adjustment" violates foreign key
constraint "order_adjblng_oa" on table "order_adjustment_billing"<br/>
Detail: Key (order_adjustment_id)=(10815) is still referenced from table
"order_adjustment_billing".))

This is caused by these lines in OrderServices.loadCartForUpdate:
             List<EntityCondition> adjExprs = new
LinkedList<EntityCondition>();
             adjExprs.add(EntityCondition.makeCondition("orderId",
EntityOperator.EQUALS, orderId));
             List<EntityCondition> exprs = new
LinkedList<EntityCondition>();
exprs.add(EntityCondition.makeCondition("orderAdjustmentTypeId",
EntityOperator.EQUALS, "PROMOTION_ADJUSTMENT"));
exprs.add(EntityCondition.makeCondition("orderAdjustmentTypeId",
EntityOperator.EQUALS, "SHIPPING_CHARGES"));
exprs.add(EntityCondition.makeCondition("orderAdjustmentTypeId",
EntityOperator.EQUALS, "SALES_TAX"));
exprs.add(EntityCondition.makeCondition("orderAdjustmentTypeId",
EntityOperator.EQUALS, "VAT_TAX"));
exprs.add(EntityCondition.makeCondition("orderAdjustmentTypeId",
EntityOperator.EQUALS, "VAT_PRICE_CORRECT"));
             adjExprs.add(EntityCondition.makeCondition(exprs,
EntityOperator.OR));
             EntityCondition cond =
EntityCondition.makeCondition(adjExprs, EntityOperator.AND);
             delegator.removeByCondition("OrderAdjustment", cond);

order_adjustment_billing depends on the order_adjustment table so it
seems the records should not be deleted.

For a scenario where 2 items were ordered during a promo and 1 item was
added after the promo ended after 1 payment had already been recieved,
some sort of date checking logic would have to be implemented to look at
order_item_change change_date and compare with the order_adjustment
created_date.

Anyone ever faced a similar problem or have recommendations?