[quote="xLilacVixenx"][quote="FlipMode"][quote="Jiirani"] It says:
First American Edition. Copyright 1994 The Walt Disney Company.[/quote]
TLKII came out in 1998[/quote]
Then that proves it...they just considered it as a male before the Simba's Pride creators changed it to female.[/quote]
1.) Please note that "Copyright 1994 The Walt Disney Compnay" is not the same as "Created/written by Disney". You can hold copyrights for someone else's creation just the same as your own, if the creator gives you the rights. And that is what happened with "The Six New Adventures". The Walt Disney Company had gained the book's copyrights that year. That's all. And even if a book was created and written by someone at The Walt Disney Company - as long as that someone isn't one of the film's makers, the book doesn't prove anything about the film.
The book universe authors only assumed or personally viewed that it's a boy because it looks heck of a lot like Simba did as a baby. But it never had a gender in the movie universe until SP gave it one in 1998. In its own film it still doesn't have a gender because they didn't bother to edit the commentary track for the 2003 DVD release.
2.) So, they didn't change anything. The SP film makers decided for the first time ever, which gender the cub is in the movie universe. It was Fluffy without a gender until they decided it to be the daughter Kiara. (Unless one wishes to regard only the canon, in which case it remains Fluffy without a gender and thus is to you personally whatever you want it to be.)