I loaded an old save to look at fixas in full Glory but now I have an in inventory item I can't use because already finish M research how do I delete, I think you might need to use a save editor unfortunately, I don't think you can delete broken old stuff, I don't know if we tested this if I'm be honest but maybe we did, but you might need to use a save editor or just don't look at it just put it in a box somewhere and just forget about it close to the abyss yeah yeah