If you still have the original photos, maybe you can write a script to run both the originals and exports against a perceptual hash (so as to easily identify th

If you still have the original photos, maybe you can write a script to run both the originals and exports against a perceptual hash (so as to easily identify the correct original) and then just update the JPEG EXIF data of the exports? https://github.com/JohannesBuchner/imagehash https://github.com/JohannesBuchner/imagehash Depending on specific formats, you should be able to read and edit metadata without having to reprocess the images. If the exports are named similarly to the originals, you don't even need to hash them.