I know that this is possible, but I don't know the specifics. you may be able to activate your account, then transfer it that way if your ps5 has the same account. I just know that save mounter saves do indeed work.
I'm aware that this is feasible, but I'm not sure how. If your PS5 has the same account as you, you might be able to activate it and then transfer it that way. I only know that save mounter saves are effective.