Just thought I'd let you know of a way to keep graves you place in a cemetery in Edit town mode.
If you have made a cemetery and want to decorate it without having the graves you've placed go back to your inventory, simply follow these steps:
1.Put a Mausoleum in the cemetery.
2.put all graves in your inventory
3.(If you know someone that has died, and you've yet to place their grave) Click manage the dead on the Mausoleum.
4.When the box pops up, place all the graves in your inventory into the Mausoleum.
5.Exit the Mausoleum.
6. Hit manage the dead again and place the graves where ever you want.
7. Ta-Da! now you can go to edit town and fix everything how you want it. The graves should remain there.
