Thanks for your help with this. At June EOM I cleared all details in both tax summary and tax tracking. Now I have only 7/1 and 7/2 transactions in there. Gridview still does not match OE. I note that Gridview does NOT show any "C" credit notes although I do have one. I also note that if I have a negative item on an invoice (such as customer returns an item for something else), GV only picks up the sale item, not the return (negative).