This feature adds enhanced tax calculation for partial customer order returns. It ensures that when orders that are refunded partially, or with multiple invoices, the taxes are equivalent to the original order. It will also prevent recalculation of tax on customer order returns in POS. Note: This feature requires the 'Do not recalculate taxes' setting to be set to 'Don't recalculate' in the Commerce parameters for Customer orders for all companies. This currently only affects customer orders and not cash and carry transactions.