Well, something else that worked before, no longer does!
I want fields that are empty to not print, including their borders.
Specifically, I have an invoice database. It has categories (services, products, shipping, payments). There are subtotals for each. I put top borders on those subtotal fields to print. But if some of the categories, and the subtotals, are empty, I don't want the borders to print either. The labels are calculation fields. It used to work!