In a statement released to IGN, the studio refuted reports that production on the movie has been halted to allow the leaked scenes to be rewritten.
"Filming on The Avengers is on schedule and going well," read the memo.
According to Thor actor Chris Hemsworth, who will reprise his role as the thunder god in the film, the leaked pages came from an early draft of the screenplay.
"My start date is still the same. I think it was a pretty old script, though," he told The Wall Street Journal. "I got off the plane the other day and I found that out, but I know that script changed a lot, so it's not the most recent version of it anyway."
He went on to explain how his character has developed following the events of his solo outing. "He's sort of matured in some way, and now you don't want to repeat the same mistakes in the character; you want to do something different," he added.
"So that's also a thing - the challenge in doing sequels is you can't go through the same arc again, and you want to sort of approach it with a new maturity that makes a new challenge in some way to it."
The Avengers arrives in theatres on May 4, 2012.