Re: How do I move Sims 4 progress from my Mac to my Windows 10?
@frankiesdoll Please move the Sims 4 folder out of Documents\Electronic Arts and onto your desktop. Launch the game, which will create a new folder; start a new save, play for a couple minutes, save your progress, and quit. Reload the game to make sure the save is still present. If it's not, or if you get an error trying to move files around, please stop here and let me know.
Otherwise, you can copy the files inside the saves folder from the old Sims 4 folder (the one you moved over from your Mac) to the new one in Documents\Electronic Arts. The same goes for the contents of Tray. It's better to move the individual files rather than their folders. Load the game and see whether your content is present.