Simplify the following text for a Grade 9 native English-speaking person.
Original: In 2002 the show reverted to its previous format of taping the matches before Raw . Since the brand extension in 2002 Heat became exclusive to the Raw brand , the only exception to this was pay-per-view nights which were broadcast live from the PPV venues and could involve wrestlers from the SmackDown !
Simplified: Following the WWE Brand Extension in 2002 , Heat began being broadcast featuring matches and content from the Raw brand .