User blog comment:Cogitoergosum/Movie deleted scenes/@comment-4002575-20110819164442/@comment-3347644-20110819235554

Exactly. I hope this doesn't appear to be based solely on optimism, but I do feel the scene will encompass interaction between Phineas and Isabella (hopefully what Phineas was going to say/do?) That's, presumably, why it was deleted. Dan wanted the viewer's focus to be placed on Perry and the boys, more so than Phineas and Isabella. An extension of the scene would be unnecessary.