An ironing board folds flat by design, which makes it easy to move, but the folded metal legs are sharper and more exposed than they look and are what usually catches on a doorway or another item.
Pro tip: If the cover is stained or worn, moving day is a convenient time to replace it before it goes back into daily use at the new place.
Watch out: Confirm the folding lock has fully engaged before carrying it; a board that springs open mid-carry can pinch fingers or scratch nearby surfaces.