While editing the chart of accounts I noticed a weird thing was happening to the original accounts (Accounts SAP created, not ones we created using the copy feature). When I look at an account under company code data to change the tax options the tax options would show one thing but when I go to click edit and go back to update the tax options it shows a different option (the option I want). Then I click save and recheck the tax option and it still shows the original or unwanted tax options. It is not every original account. My question is which tax option does SAP use when we post entries.