Has support for JSONs as tile maps been removed?

I’m working on a Paper2d game and I want to use an outside editor. Info online suggests that UE4 natively supports importing tile maps from JSON files. However, when I try to do this, with 2 different pieces of software, the JSON files try to import as data tables and have no options for tile maps anywhere in the import UI. Watch youtube videos of JSON files from tiles, they just show up as tile maps automatically. Even without using the special plugin that is available in the marketplace. Any ideas?