I apoligise 7 hours later I read this, somehow thinking you had posted it
Sorry
Sorry
Can't understand why the new fitting can't accept two neutrals.
Can't understand how you selected which neutral to go to the light fitting, and which one to put in a 'choc bloc'.
Can't understand why you are talking about 'wire nuts' when it seems you have 'choc blocs', one of which could be used again, only correctly.