Don't have file custom POIs for KingGen, all compo pack already in AppData 7DtD mods but went normal vanilla POI no custom POIs on KingGen, I guess not work on A20.
I was tried few custom POIs folder put in normal 7DtD POIs folder then created file custom POI & map generator on KingGen worked now have custom POI but don't need Parts & Tiles folder because won't generator on KingGen only normal 7DtD map generator, much better than bored vanilla POIs lol

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Compo Pack many separated POIs folders not all in 1 just pick any custom POIs into 7DtD POIs folder.
I started loaded new games boom! worked have custom POIs from KingGen. Zombies spawned worked.