My Plot was Corrupted?

[Dogloverblue]

So I just started building an parkour course on my plot, I left for about 8 hours then came back, when I came back, the plot had changed, and had werid repeating designs on it. not sure what caused it. Does anyone know what happened?
Luckily it is easy to fix, but it is pretty weird.

This is an after picture

this is a before picture

 

[caseyclosed]

Typically using .//set to do a large amount of worldedit will cause a corruption in your plot. I believe that the grass below that you .//set corrupted your plot and so your % variation worldedit command was corrupted. The only real fix is that you copy your design into your clipboard and then ./plot delete. Hope this helped!

 

[Dogloverblue]

Thanks, I did use alot of world edit, so that's probably it it. Thanks!!