@SamGielen if you bring in your FBX with where every object is a separate object say a fracture from houdini. All you have to do is drag all the chunks into the world at the same time. And while they are all selected you can then make your geo collection. Now each chunk you brought in is its own piece in the geo collection. Then you can use the interactive tools to select each fragment you want and then you can fracture it even more or do what ever.
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