Put the summary of the bug you're having here
Blocks don't appear when blocks are clone back to original position
What I expected to happen was...:
trigger the clone command and it clone to different location, modify it then clone it back with the added blocks

What actually happened was...:
When i used a clone command to clone a set of blocks to a different location, then added a block to the set then cloned the "modified" set back to the original location.

Steps to Reproduce:
1. make a structure,
2. Take the structures coordinates (X,y,z and x.y.z)
3. Put cords. in a clone command and initiate clone to different location
4. Once cloned to other location, modify the cloned area with blocks
5. clone back to original location.

Attachment Information:
This is a map I'm working on, if you click the sign n the closed building, modify it then clone it back, it won't appear.
It one crashed my game