No idea at all. You sure someone else hasn't used your computer in the meantime. You have 2 options: 1. Use the original save location: go to Tools>Options>Saving & press the default button & press the apply button. It means you'll need to move your files from the 2nd location to the 1st.
2. Keep the 2nd location. Search for shared on your computer & locate the original files & cut & paste to the new location.