Board Thread:Show-Related Questions and Answers/@comment-9902988-20130522225113/@comment-108.244.96.127-20130523024822

In "The Doctor" episode Regina said during a session with Archie that she simply brought who she wanted. It is possible that the curse was selective to a certain extent. Remember Whale wanted to get back to his brother Gerhardt who was not brought to Storybrooke. So it has been indirectly confirmed that the curse went to other realms because Regina admitted she took people she wanted.