Base falling apart

[Baco11]

I have built a base on the water with the buoys as the foundation.  Every time I want to destroy part of the base, the whole base wants to fall apart.  I could build a door, decide it is facing the wrong way, and destroy it to re-build it the other way and my whole base starts to fall apart.  I understand if you build a set of stairs and destroy the bottom one, the whole lot will come down but that is not the case here.  If i destroy ANYTHING, the whole base starts falling apart.  Any ideas?  Is this happening to anyone else?  Does my base need to be "grounded" to the actual ground and not just water buoy foundations?