Lightroom has the concept of virtual copies. If you want change a photo to Black and White, that photo will be in Black and White in all the collections. If you can to change a photo only in one collection then you can create a Virtual Copy.
What about the existing virtual copies? Where are they? You need a Smart Collection to find them. The problem is that Lightroom doesn’t have a filter for the virtual copies. But we can always fudge by looking at the side effects, the “copy name.”
Lightroom: Smart Collection to Find Virtual Copies
- The Copy Name is not empty