How to save new nodes positions in Sankey HTMLs?

Hello,

I have generated HTML Sankey diagrams with Plotly, with the following parameter :
arrangement = “freeform”, so I can move the nodes when I open the HTML.

When I open it, I move the nodes to make the sankey clearer, but I would like to save these changes.
Is there a way to save the HTML with the new positions of the nodes?

Thanks!

Charles.