Afrodite-Ohki posted at 9:26 AM Fri, 8 October 2021 - #4428670

Ctrl+c ctrl+v to copy+paste, or right click the window to get a menu with the options...

'Apply to all' will paste all selected nodes across all materials, including connections. It will leave pre existing nodes intact, detached if applicable.

To delete unattached nodes utilize the Remove Detached Nodes Wacro or select specific nodes: right click: Delete

Shift Clicking Remove Detached Nodes Wacro will remove all detached across all materials of the object