Is New Guard part of CHERUS Series or Aramov Series

So as the title says, on this link

https://en.wikipedia.org/wiki/CHERUB

new guard is listed below CHERUB and Amarov, but online I only find the copy which is part of the Amarov series, so is it just a mistake that is it mentioned twice, once under CHERUB and once under Amarov or is it ment to be like that?

Also, for those of you that have read it, is this the "summary" of it: One last mission...There's been a massive explosion on campus. Mission Controller James Adams has experienced agents like Ryan Sharma and Fu Ning at his disposal, but kids can't do everything. It's time to call in the old guard. Bruce, Kyle, Lauren and Kerry are back, working on a daring mission to rescue hostages, deep inside an Islamic State territory in the final CHERUB adventure.