Hello,
a great tool and the whole thing is also free, so first of all a big compliment.
I have a suggestion for further development:
If you copy an assembly, e.g. the top one, then it would be cool to have the option to include all other components and also copy them to the new location. Either with index changes or without. This would make it possible to copy entire assemblies with an index status to a new location and then edit them independently of the old version.
Best regards Leon