NEW:
Not sure how to reopen, but I'd like to request specifically that custom naming data stays on at least player heads. I'd like my player head to be called "bRan's Head" but if I place and pick it up again the head name reverts to "Brandonn's Head"

OLD:
Placeable items (Signs Chests Blocks Heads) lose enchantment data and custom name data once re-picked up.

In 1.4.3 Heads were coded to keep the owner tag data. It would be nice if the same applied to enchantment data and custom name data. I have a map with player heads and custom names, if you place the head then pick it up again it retains the owner tag but loses the custom name.