Perhaps it's still your chance if you have done the same as me. I have choosen the desktop folder and click yes to that tempting "This folder
already exists and is not empty" dialog box. All icons were still showing in the desktop screen (I mean what you see when all windows are minimised) but after refreshing (press F5 button) all were disappeared, except your "session.xml" qjackctl's file.
HOWEVER if you go to /home you might find a "Desktop.1" folder with the files that were on the Desktop before messing everything. And if you saved for second time, a "Desktop.2" folder. None of them are shown in Desktop, because the /home/Desktop path is now only with your session.xml configuration file. That could not have happened if the "versioning" dialog box wasn't checked. But hopefully your didn't disable it before saving:)
Perhaps it's still your chance if you have done the same as me. I have choosen the desktop folder and click yes to that tempting "This folder
already exists and is not empty" dialog box. All icons were still showing in the desktop screen (I mean what you see when all windows are minimised) but after refreshing (press F5 button) all were disappeared, except your "session.xml" qjackctl's file.
HOWEVER if you go to /home you might find a "Desktop.1" folder with the files that were on the Desktop before messing everything. And if you saved for second time, a "Desktop.2" folder. None of them are shown in Desktop, because the /home/Desktop path is now only with your session.xml configuration file. That could not have happened if the "versioning" dialog box wasn't checked. But hopefully your didn't disable it before saving:)