To update and save your group:
- Select your group node and click the Group icon on top of the node to visualize the group network.
- Make your changes as necessary, then select the group node and choose Group menu Save Group To Disk.
Note: You must select the group node that you want to save before you can choose Group menu
Save Group To Disk.
The changes you made are saved to disk and visible the next time you create the group node via the work area right-click menu.
Note: ShaderFX saves a group as a GRP file in the folder
/users/<username>/my documents/3dsmax/shaderfx/groupnodes/.