Thread:Tupka217/@comment-38176068-20191011220455/@comment-18172179-20191011222008

That's the catch. Him and the other admins didn't really decide anything regarding this.

If you take a look at that Joker's talk page on the First Appearance section, you'll go down a rabbit hole that will help you understand what happened from a historial perspective.

Since that might prove to be obsolete, I'm fine with making due changes to the standard practice of 1st appearances. Meaning changing NE's Joker infobox to match his post-crisis first appearance.