User blog comment:Energy X/Pokémon News - 18-01-15/@comment-1607934-20150119162106/@comment-1607934-20150119172453

BW is not the only series that have some parts that were taken from previous episodes. Some parts of some episodes from AG and DP were also taken from original series episodes. They wanted to make the series similar to the IL series and that why they decided to write the plots similar to the IL episodes.