Deleting Column using Form Settings issue

I have a problem deleting a column from the Sale Order Enty screen. I added the Bar Code column to the Sales Order Entry grid to 5 users using Forms Settings. I decided to delete it from all 5 users, so I went back to Forms Settings and deleted the column. Actually, I checked the Visable check box to have the Br Code column displayed and then I unchecked the Visable check box on the Form Settings form.

The problem I am experiencing is that one of the 5 users, I delete the column, and when the user logs back into the system again, the column is back, and I have to delete it again. This happens each time the user logs out and then back in. Has anyone else experienced this problem? And if so, how did you resolve it?

Thanks in advance!!

Dana