During my career at Intel, one of the misunderstanding most managers had was that employees in the same role were easily transferrable; especially in roles that did not require deep business or technical knowledge; like project and program manager, first line manger, UI/UX designer and others. This assumption would make restructuring or reorganizations of the workforce easy.
While the roles may be transferrable, but folks in these roles may or may not. Omer Molad of Vervoe writes about the same in this blog.