Andrew - I have some more information on this.

If you edit a row on the inventory worksheet to change the quantity to zero and make a change it takes. If you go to a second item to edit and make it zero, when you exit the editing screen the row shows as not changed. If you exit the Inventory Worksheet entirely and go back to that row the change to zero seems to work.

Do you have an FTP where I can put the data?

Mike