FlowScape 1.5.1 has changed the location of the saved scenes.
On Windows it is now in:
C:\Users\UserName\AppData\LocalLow\PixelForestGames
You can copy the two folders Saves and screenshots to the new folder, but FS does not show them.
Just click on the cell that held the previous scene and it will load. Then save it back to that cell.
The orbit function is back to previous versions. It is now Right Click Alt