When you create a blend shape deformer, a blend shape deformer algorithm node (default name: blendShapen) appears in the scene’s dependency graph as an input of the base object’s shape node. This node uses the target slider weight settings to create a blend shape from the base.
The blend shape deformer node name appears in the Blend Shape editor above and to the left of the associated target sliders. To display the animation keys of weights in the Time Slider, Graph Editor, and the Dope Sheet, you must select the blend shape deformer node.
To select the blend shape node