Job Vacancies reflected in NYC Jobs website vs a127 legacy (External NYC Careers Portal)

I am currently applying to various college aide positions. I have found that when searching for positions in the a127 legacy website, it would not allow me to even view the posting if it it was "filled." Mind you, these are positions were posted only a week ago. However, the same posting on the main NYC Jobs website remains open to applications, some of which are well past the "posted until" date. Is the legacy website broken, or does it actually reflect if the position is legitimately already filled? Is it still worth applying through NYC Jobs? Thanks.