I’m actually not 100% sure if you do need to remap them now that I think about it. It’s been awhile since I did my mods and lost all my projects due to a hard drive failure so I can’t look at them for reference. I didn’t really use the lootitemsets because from my experience they didn’t work well so I just edited the crate contents directly. I do remember adding some lootitemammosets to one of my last versions but not 100% sure how I got them to work. I made aguide a while back for modding the crates. Maybe that will help - HOW TO: Supply crate contents modification - ARK: Survival Evolved - Unreal Engine Forums