Editing a feature-based model and pushing/pulling a shape can produce the exact same-looking result — and behave completely differently the moment something downstream depends on it.
Two engineers can look at the same wall or the same hole in a plate and see identical geometry — same height, same diameter, same position. But one of those objects might be carrying a stored parameter and a network of relationships behind it, and the other might just be a shape that happens to currently look that way, with nothing tracked behind it at all. That difference is invisible until you change something. Then it determines whether everything downstream updates correctly on its own, or whether nothing happens at all.