Try this if you haven't. NPCReplacements=(FromClassName="carno_Character_BP_C",ToClassName="carno_character_bp_aberrant_c")
PS. Can you explain how you did the rockdrakes drops? Thanks
I will try this again. I had done this before doing any edits to the base spawners and it seemed to just prevent the "fromclassname" dino from spawning at all and didnt replace it with anything. However maybe it will work now that i have added in the aberrant spawner to the base spawn list.