How do disable copper/granite ore veins and lava lakes in dimension without locking code.

My custom dimension generates copper/granite ore veins and underground lava lakes/aquifers and it shouldn't, the biomes also don't generate the specified "underwater block" or any block at all below Y 64, exposing the bare stone and ores, and structures generate floating in air because 2024.3 doesn't allow me to offset the structures upon generation like in older MCreator versions for some reason. Also worlds show an experimental settings message upon being opened when a mod made in 2024.3 has a custom dimension. How do I solve these issues?