The shortest-path-principle needs elaboration. When the alignments of the target parent node comprise several source locations, inferred navigation is not the union of all navigations from any parent alignment to any source alignment. To illustrate the problem, let us assume that the alignments of publication comprise book and journal, and the alignment of child location title comprise title under book and journalTitle under journal. Given a parent publication with a source context consisting of a book node, we want to rule out the shortest path from book to journalTitle. The example shows that the shortest-path-principle requires further elaboration which is work in progress.