Transfer Bone Vertex Group Data [Blender Addon]

This is an addon for blender intended to help with moving vertex group weights around that are associated with bones of an armature for an object. Examples for uses are things like trying to add up all of the weights of different head bones into one vertex group, so you can get rid of all but one head bone for moving the head (simplifying armatures basically).

Functions:

• Transfer data of selected bone's corresponding vertex groups to a selected vertex group of a selected object
  • Transfering data includes adding their weights, subtracting their weights, or replacing the weights of the selected group
    • Note that replace will end up replacing all of the selected group with one of the bones, not adding up all of their weights
  • The script will try to edit vertex groups of any objects selected that are also attached to the active armature, but cannot be guaranteed to work on multiple selected objects

Notes:

• Button is added in the armature dropdown menu while in edit mode for an armature.
• This was made for Blender 4.2, so may function weirdly if used on a different version, but will likely work on future versions.
• Tested for most likely error cases, but can't guarantee I caught all of the bugs

Install Guide:

1. Download the file
2. Go to Edit->Preferences->Add-ons then press the "Install from disk" button hidden in the arrow drop down menu in the top right
3. Select the python file downloaded earlier
4. Hit the install button (should be called "Transfer Bone Vertex Group Data" once installed)