After editing images in Lightroom, I upload the images to an online site for backing it up and delete the local copy. While uploading the site changes the file names. So when I download images from the site, all of them have different file names as compared to earlier. Even if I manually locate one file in the collection, the Lightroom cannot automatically locate other files in the same collection because all of their names have changed. Is there a workaround for working with images whose filenames are changed and there is no sequence to the file names?