Niagara Component not destroying/deactivating

5.3.2 - I have multiple BPs which spawn via a ‘Niagara component attached’ node.

I am finding that despite deactivating and destroying the component after time - it continues to run/exist in the viewport (But I see the component dissappear as expected from the details panel of the BP)

Here you can see the BP selected - with the particle clearly visible/selected but the component has gone from the details panel. Any thoughts on why?

This is how I destroy them in the BP