Dash symbols are associated with the data they replace, just as table comments are, and can be lost if you modify the repeat region’s attributes. For example, if you replace a report quantity value of 3 with a dash symbol, and then modify the region’s attributes to duplicates, the system warns you that the content of comment cells or dash items can be lost and asks you if you want to continue. If you continue, it converts the dashed symbols to the appropriate parameter value display.