When I was looking for nuclear rocket fuel recipe in FNEI, then I realized there is no recipe to make it. When I hover on the item in FNEI, it says it has been modified by MCI and bobs revamp mod and nothing else.
When I enabled a mod called "nuclear fuel", which adds nuclear rocket fuel recipe with plutonium, which is an item from the mod itself not the MCI one, as ingredient, and I could make NRF again.
What happened here?