Minecraft PE: turning a creative world into survival?

I was wondering if with the new 0.9.0 update on the pocket edition of Minecraft, can you turn your worlds into survival from creative. If so, how?

So the minecraft pe developers have changed the format of the data files for worlds, from entities.dat (animals, chests and paintings) , chunks.dat (every block in the minecraft world) to level db which is folder in your mine craft world.

So here is what your going to have to do (for ios only):

1) Make another world in minecraft pe and name it what you want it to be called because you can't change the name after you load the world then use the same seed as your creative world but load it in survival

2) go to http://www.macroplant.com/iexplorer/
and download iexplorer on your pc or mac.

3) launch it and connect your ios device to the computer and it should come up on iexplorer.

4) go to apps, minecraft pe

5) click on documents, com.mojang, minecraft worlds

6) then drag and drop your world file into your documents to back it up in case any thing goes wrong.

7) click on your creative world and drag and drop the folder 'db' to your desktop

8) go back and click on the survival world you created and delete 'db' folder

9) then drag your creative worlds 'db' folder from the desktop and drop it into the survivals folder

10) launch minecraft pe and go on the survival world and it should have the same look as your creative world!

Please tell me if it worked, if your creative world is messed up delete it and drag the copy you saved in documents to the minecraft worlds folder and it should be back on your ios device as normal.

Hope this helps