I have been working on restoring a photograph using Adobe Photoshop, I made a duplicate before working on it. After completing it I minimized it to see the change on the original and it has disappeared !!! I did not close it, where has it gone or have I got to start again ???
Have you got your layers palette open. Can you see the original in there? If so you can look at it by clicking on that layer. Also you can hide other layers so that you only have the original layer showing.
I have got the original saved in my documents but no sign of the duplicate that I worked on, I definitely did not close it and If I had it would have asked me if I wanted to save it !