Custom component default children

Hi, I am trying to understand how I can achieve the following.Create a component with a default content as children.Create a block to add that component to the canvas.Edit the component children to anything else and save the HTML result.Reload the component in the editor later on and continue editing. My issue is the following:I have tried using components and content in defaults.I have tried defining some custom logic in init function of the view of my component, to only append the default value is no components exists. Both these methods, do not work, they work at first, but if I edit the t...