We notice that when exporting an assembly using the pack and go tool, far too many files are copied. The assembly in question has 3 parts, in the end I end up with 40 parts in the reception file.
Have you ever encountered this problem? Is there a particular adjustment to be made?
It's true that the options of Pack&Go are not immediately obvious: Step 1: (Top Left-Check/Uncheck as needed))
otherwise by double clicking on the column headers: You can add or remove selections according to criteria (names, locations, etc.)
On the other hand, you should avoid external references (as @sbadenis says), normally they are restored with the new project (the copy) unless they are in error or sometimes just broken, and this may create references with the original...