Maya Script (2022+) - Update and Reconnect Instanced Group Content

The group node connections are not updated on group instances when meshes are added. Select the original group (I often like to leave things on grid for easy editing) and run the script - whatever has been added to the original will be reconnected in the instances.

Usage:

Paste the script into a Python tab of the script editor.

Make sure you have an Original Group (OG) and some Instanced Groups (IG) in your scene.

Add something like a mesh to the OG.

Select the OG and run the script - all of the IGs should be updated with what you added.