Can’t select individual designs after copy/paste

It always helps with these problems if you can supply the offending .lbrn2 file…
Removing and reinstalling packages is generally of no use anymore. I don’t even consider it as a viable option. I think it came from the DOS days…
Tell us more about what it’s doing and some screen shots are valuable.
When you import/select the object is it grouped? Try un-grouping the objects.