I have always created a copy of a jpg from Mac Photos to do any editing. Today, for the first time, I decided to open a photo from Photoshop CC 2017 and do a simple edit as a test. I had made copies of the test jpg in Photos. The edited photo saved and could be seen as well in Mac Photos. However, the edits occurred on all copies. Why?
Is happening with 1 image or all the files?