This command lets you change the order of the target objects as they're applied to the base object which has a blend shape deformer. See Swap the order of target objects for more information.
If the base object shape you selected is influenced by only one blend shape deformer, you don’t need to set Specify Node on. If on, you can specify BlendShape Node and Existing Nodes. Default is off.
Specifies the name of the blend shape deformer whose target object shapes you want to swap. Only available if Specify Node is on.
Lists all the blend shape deformer nodes in the scene, and indicates the blend shape deformer whose target object shapes you want to swap. Only available if Specify Node is on.