What I need help is to be able to file with dynamic names using integration service, for example I have 5 files in a folder using a loop for each achievement to upload the 5 to a target table in SQL, my problems is that I would like the next load do not upload the 5 already loaded but only the new files deposited, which means that in the folder where the 5 initials are now there are 7, those are the ones I want to upload, but not the initial 5 since it generates duplicity, someone can assist me to see which way I should go, thank you very much