I undid your edit because all of the information I removed was fake.
- The May 1, 2019 date was fake and accidentally assumed by a blogger, named NickALive. He removed the date from his blog post.
- The part about it being after the movie is speculation, since the show has no continuity like that.
- The episode's story was written by Kaz and Mr. Lawrence.
By the way, May 1 is just the day that Nickelodeon previewed the show's pilot in 1999. July 17 is the day that Nick counts as the "official" premiere, since the first official episode premieres were on that day. See this for proof: https://twitter.com/Nickelodeon/status/225343058152144897 and this: https://twitter.com/Nickelodeon/status/197420060455866368