Originally Posted by: maggior
So, I don't think you need to unlearn anything...but learn the alternative fingering because of the flexibility it gives you. Having your index finger freed up with this chord gives you the ability to add some embellishments.
I also learned G 1,2 and 3 then had to learn it later using 2,3 and 4. I agree with maggior keep the old and add the new. You will need both in time.