As an afterthought, I would like to see the following behavior.
1. If using File>Edit in Photo, then the current behavior is fine. The entire document is opened.
2. If an Artboard is selected and right clicked, the pop-up allows editing the entire Artboard in Photo
3. If an image is selected, then right clicking would allow editing of only the selected image in Photo
In #3 Upon closing the edited image, an option to also save back to the originating image file would be great.