In the 99th episode of Semantic Mastery's weekly Hump Day Hangouts, one participant asked if it is necessary to keep the content from the old site to the new site exactly the same after a 301 redirect.
The exact question was:
Left off a question (oops) – Do I need to keep the content exactly the same on the new site when moving it over? I want to change one page content about 50% – same topic but just written better. Thanks