Because the selections created are based on channel values, and not which laser sample they originate from, there is not an easy way to do this. For example, the data matching your criteria may span many laser log samples and iolite would have to choose which one it is based on. There is an option to use the mass spec file from which the data originate in the selection name by checking the 'Use filename for label option'. Does this help? If not, please let us know.