I have a datapack, and in the data folder its just this:
data > alloy_forgery > alloy_forges
Within the alloy_forges folder I have a blank JSON file for each pre-existing forge (example: "bricks_forge.json"), except for 'deepslate_bricks_forge' where the tier was changed to 2.
None of the changes are applying- all still exist, and the deepslate brick one remains tier 1. I tried this initially through kubejs, but its also not working as a normal datapack.

Fabric 1.20.1, alloy forgery 2.1.2, owo 0.11.2