There used to be a Wikipedia page on The Lion King: Six New Adventures, and there was a section on that page containing several contradictions between the series and other TLK media. Here's that list in its entirety:
[quote]Simba has a son named Kopa in the books, but Kopa is non-existent in the 1998 Direct-to-video Sequel, ''The_Lion_King_II:_Simba's_Pride'', and no mention is made of him.
In ''A Tale of Two Brothers'', Ahadi is described in the text as having a long black mane and bright green eyes. Yet in the illustrations he has a brown mane and brown eyes, and resembles Mufasa.
In some storybooks adapted from the film ''The Lion King'', it is stated that Rafiki had presented a new-born Mufasa to the animals of the Pride Lands before. However, in ''A Tale of Two Brothers'', when Rafiki first arrives in the Pride Lands, both Mufasa and Scar have already been born.
In ''How True, Zazu?'' it is mentioned that Zazu became steward to the king after his mother, Zuzu, retired. However, another book ''Friends in Need'' contradicts this. In the book, a teenage Mufasa saves Zazu from Shenzi,_Banzai_and_Ed, and Zazu wants to help Mufasa in return. Mufasa thinks Zazu is a nuisance at first, but after Zazu helps him rescue a teenage Sarabi, he decides to make the bird his trusted advisor.[/quote]
The third contradiction on that list is the one that puzzles me. I've never seen a TLK storybook mentioning Rafiki presenting Mufasa (though admittedly, I haven't read very many). Does anyone here know of a storybook that does?