When The Lion King came out did Disney really replace Scar's singing voice actor?

[DodgerGirl]

I once heard a story that when The Lion King was in production and they were doing the song Be Prepared Jeremy Irons originally was both the speaking voice and singing voice of Scar but in the middle of production of Be Prepared Jeremy Irons developed throat problems and he was replaced by Jim Cummings as Scar's new singing voice but once Jeremy Irons recovered he returned to do Scar's speaking voice. Was this true and how did Jim Cummings feel about replacing Jeremy Irons doing Scar's singing voice?

 

[DodgerGirl]

Why I think they chose Jim Cummings to replace Jeremy Irons as Scar's singing voice was because when you see Jim Cummings voice villains in cartoons and movies he has appeal to the characters. And it's hard to see Jim Cummings voice cartoon and movie villains because most Disney fans know Jim as Winnie The Pooh's current voice actor and the voice of Ray from The Princess And The Frog. But I think Jim Cummings should've done the singing voice and speaking voice of Scar in The Lion King rather than go with Jeremy Irons because I think Disney chose Jeremy Irons because he's known as a huge talent and how he got to perform Scar's voice is something surprising because Jeremy is known for big roles in movies and TV