You can use parent! instead of the parent title then it does not matter when reused. Providing the formulas are same, if is to be different, check and make the DC child unique first if required.
When anticipated, one word titles are easy changed with a double click on the child reference and control V, (having copied the first “parent”) than parent titles with _ or many words.
If using instance names, avoid manually changing its title or using the “Name” attribute as this stops the instance updating the title and is lost from the report as per