I would like to export to excel the complete list of the parts of my set, but when I go to select the structure it does not allow me to export all the levels!!!! What's wrong?
I'm telling you in Italian by giving you some more than just names, I don't know what they call English, but from "bill of materials" I imagine you have inv in English.
open the separate components, enable the tab "structured" (the middle one), with a right button on the tab and the first item on the top of the menu (activate maybe), then again the right button on the tab and the last item (perhaps view poperty), from the window you have to enable "all levels" instead of "first level" (all levels instead of first level).
At this point you should be able to export everything.