Here's the problem: I somehow managed to accidently change the creation dates of many image files, so even though they're from 2013 and 2014 they're now dated 23rd June 2015. Fortunately I have backup drives with their original dates. Since we're talking hundreds (perhaps thousands) of files here the challenge is to figure out how to avoid doing this manually, one file at a time. So far is to use the Finder's search function using the date and file criteria, so the affected files have all been identified and tagged. The files are all neatly organized inside folders/sub-folders, so is there a quick and simple way to have the unaffected copies replace the affected ones, all in their correct folders?