Well you guys are half right. If OP EVER installed the pre-load and used the "dummy seed" to play early, they will have to import the official seed after installing it from freeshop even after deleting the title and ticket. There is no way to remove the seed once it's imported, even reinstalling the game will result in it using the last seed manually injected. So yes, it is 100% necessary to import the seed if you ever used the "dummy version" on the leaked .CIA after having installed the pre-load.