Named item loses name

Put the summary of the bug you're having here

What I expected to happen was...:
The renamed Jack-O-Lantern would retain the altered name after digging up the Jack-O-Lantern.

What actually happened was...:
The name was reset to Jack-O-Lantern.

Steps to Reproduce:
1. Rename Jack-O-Lantern to Wilson with Anvil
2. Place Wilson on the ground
3. Dig up Wilson
4. Inspect name in Inventory screen (now displays Jack-O-Lantern)