Might be partly duplicate functions - but a key feature in this script was the naming: the definition inherited the group's name, not the instance.
mac1 wrote:I use it very often to convert single groups to components especially in models where some one has used a number of identical groups.
Does SketchUp still consider them copies of each other? If you select one and open Entity Info - does it say "Group (3 in model)" ?
If so, Selection Toys can convert them into components in one operation.