I accidentally got 20 points instead of Fifa for my ps4 Fifa 19 points for them. My question is, if I can still transfer these fut19 points to Fifa 20, because of course I will not register there for the first time.
You can redeem the points and then take over in Fifa 20. You will be asked once if you want to take the Fifa Points from 19 to 20. So that should work. Unless you have ever taken which of 19 in 20, then it is not more.
As it is of course if you have been in Fifa 20 many times, I can't tell you. It only helps to try out.