Upon changing the values inside the config for inmis, the values get reset back to its default config values.

For example, I am changing the Endless backpack's properties and the amount of slots it should have. This is an example of what I changed for it: (its in a quote because putting it in a code block does not give a desirable look)

{
"name": "endless",
"rowWidth": 21,
"numberOfRows": 6,
"isFireImmune": true,
"dyeable": false,
"openSound": "minecraft:item.armor.equip_leather"
}

However, when I save the config file and boot up Minecraft and create a new world (for testing purposes), the values do not change when I grab an Endless backpack from creative mode. I checked the config file again and the values got reset back to default.

That worked! Thank you so much!

inmis-2.8.2-1.21.1.zip
Maybe try this, used gson instead of jankson here.

reopen this issue, as this is not fixed yet