Customizing Invoice Layout - On Screen Issue

I went into the REPORTS & FORMS -> INVOICES-> selected the form to edit -> customize and I customized the invoice to my liking. I saved it. When I am creating the invoice and select this invoice template, the additional description column does not show up on the screen for me to enter the data. 

The box is checked for ONSCREEN & PRINT. When I go to print preview the column shows up blank- I just have no way of actually ENTERING the data I need to enter in the newly created column. It's driving me nuts!