Related but not the whole story. We had issues in manjaro-architect edition with stuck keys on tty, which could end wiping out users hard drive without warning. We could not release an iso with that issue naturally, so the manjaro-architect iso was horribly outdated and gained other issues as time passed. The version in other isos worked just fine. However, @philm wanted to drop those because manjaro-architect was going almost unmaintained (still working though, but not new features or bug fixes).
Many unnecessary steps. Just do
sudo pacman -Syu manjaro-architect
It’s still in the repos, just not on the isos by default.