When I make a custom villager using MCEdit, Any change I make in the chunk with the custom villager doesn't save when i exit my world and come back! Not sure if that is minecraft's problem or MCEdit's problem, but if it is minecraft's problem, please fix it (im not trying to sound rude).

What I expected to happen was...:
that i would be able to change things in that chunck and it would save to my save file.

What actually happened was...:
Nothing i changed in that chunck saved!

Steps to Reproduce:
1. Put a chest down and put the trading items on the top 2 rows and the result item on the bottom.
2. Go into MCEdit and Run the createShops filter on the chest.
3. go into minecraft and change the chunk that the villager is in. (Break And Place Blocks)
4. Exit the world and come back
4.1. It's not there