Re: Why can't I make a new game?
@suzziequ You can move them to the new Sims 4 folder. But please test your mods and custom content first, if you have any—these are the most common source of this error. Start here with a list of mods and cc known to be broken after the latest major patch:
For anything not on that list, you'll need to test it yourself. If you have a lot of files to sort through, the 50/50 method can make the process much more efficient.
https://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content#The_50.25_Method
Once you've done that, you can move over the contents of saves, Tray (saved households and builds), Screenshots and Recorded Videos if you care about those, and the UserSetting.ini file for the login rewards. The rest can be discarded.