I saved several renders under favorites, and when I select the one from the favorites library to upscale, when the next window opens to the Firefly generator, the original render isn't there anymore, and four random renders I did not save are seen. I want to upscale my favorite render!
Thank you for your message. I am sorry you are having this problem.
There are some issues with upscaling and favourites where the original image is not regenerated. I have seen about a dozen reports here of that problem. Adobe is aware of this issue. You might want to turn off fastmode and generate the larger images until this problem is fixed.