I am using photoshop to make small edits to JPG images from an archive. The images come to me with a lot of detailed metadata, including the year, name of artist, etc. I am cropping the images using a template built in photoshop (has grid lines) and then saving as either a JPG or a PNG. I need to preserve all of the original metadata from the source image. Can someone give me the best and simplest way to do this?