My forge map exploded...?

So I’m new to the forge scene in Halo 5, and I decided to build a small minigame just for me and my friends. It was just a small hill bowl full of fire, with a red chroma screen covering it to make it appear to be lava, with rocks surrounding it, the object of the game being to push the other players into the lava. As I was about to save though, the entire map literally EXPLODED outwards and flung its pieces everywhere. I tried to reload the map but it does it at the beginning of every round . This isn’t awful because the map only took 1.5 hours, but is there a way to fix it?

Did you have your items physics set to phase?

Yay XD I love it when my maps go boom in custom games. Suddenly my 4v4 map changed into a dynamic parkour map.

No, thats probably it, thanks.
But I’ll have to move everything back into place now -_-.

I can’t help but laugh right now. Please excuse me for the exploding map. That has never happened before.

I have actually heard about and seen exploding maps on other forum posts, just to let you know.