Deconstructing a foundation with a storage box on it will delete the box and everything in it.

I should've left that foundation piece behind until I was ready to clear the box, but I was only thinking about removing the building.
The box remained in place for a second, and then ceased to exist. All my seeds, gone!
Perhaps the player shouldn't be able to deconstruct a building part that has things attached to it until those things are removed?