Adding physics constraints question

sorry if this sounds dumb, its just in the back of my mind.
When adding physics constraints dynamically in Blueprints and breaking the constraints, is the constraint still there in the BP but just broken.
Say I was to trigger the add constraint and then break constraint 3 times, would I end up with a bp that has 3 physics constraints but just broken?
Or does it need to be cleaned up or will just clearing the ref be enough.