Point is, you may want to duplicate your set of collections, but not duplicate all their objects. Some notes: * Am rather skeptical about the practice of using operator name to define behavior of some common exec code. Imho, that should be a single operator with an enum to refine its behavior (@cambpellbarton may also have an opinion here?). Left it as-is for now, because this seems to be used by other operators too in that code. :/ * @dfelinto, @pablovazquez, @billreynish am not so happy with current names, but cannot find really good short ones either... Also, shouldn't we move those into a dedicated `Duplicate` sub-menu?