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Sorting actor array by Field, returns a sort organized by class, then field

I have borrowed the sorting code from the wiki page here:
https://wiki.unrealengine.com/Blueprint_Node:_Sort_Array_of_Actors_By_Field
and when using this custom blueprint node to sort an array of 'AI_Char' based on distance(float), it returns a sort of subclass, then distance. The array that I am plugging is of type AI_Char with multiple subclasses of AI_Char.

I have looked over the source of the wiki page and I'm unsure as to why it is grouping my actor's subclass. Any tips would be appreciated =D.

Class tree:
AI_Char
-AI_Friendly
--AI_No_Move
-AI_Enemy
--AI_Melee

Product Version: UE 4.10
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asked Jan 03 '16 at 12:05 AM in C++ Programming

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Aesais
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