There is a massive issue with the current FBX export from CC. If a mesh in CC has multiple materials pointing to the same texture, the FBX Export duplicates the textures in the output. This results in a ton of 'Texture_01, Texture_02' copies and forces us to do a TON of manual cleanup after export before the files are actually useful in a realtime engine.
Is this going to be resolved in future versions? It's a pretty big PITA right now.
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