Per our customers request, we have created a 'bracketing' visualization of the due dates for their tasks. It would be a cleaner view if we can avoid the dashes displaying in blank fields.

An example formula is as follows: IF(DAYS(field("Due date"),today())<0,"‼️ Overdue","")

What we require is where the value is blank, display nothing. If we want it to show a dash, we could use "-" instead.