I have successfully split the quote to multiple quotes and the orders are being placed seperatly for every category. Product price and subtotals are successfully calculated according to the products items in a quote order. But shipping charges are assigned multiply. Suppose if I order 3 items each of different category. The shipping charges will be $15 ( 5 for 1 product). When I place the 3 orders ( as 1 1 product of each category) each category has been charged $15 instead $5 .What should I do?