I accidentally closed an Opera window with many important tabs open only to find out that another window is still active with one tab open. Closing it will overwrite the saved tabs of the other window, which I want to recover.
I need to recover the window with "many tabs" if possible. I didn't yet close the window with the one tab open, hopefully that prevents overwriting the saved settings.
How do I retrieve, now that Opera is still active, the tabs of the closed window? I.e., where would Opera normally store these tabs when it closes a window? Can I prevent it from overwriting the saved state of "many tabs" with the current "one tab"?