BLEND SHAPES - making changes to main mesh after already creating duplicates.*If adding or removing vertex: Edit Deformers|… | Character design, Maya, Maya modeling
Maya 2016 Extension 2: Shape Editor - YouTube
SHAPES 2 Blend Shape Editor For Maya Will Add Support for Blend Shape Weight Maps - Lesterbanks
Maya Zest: How to Add Blend Shapes inbetween blendshapes (Maya)