i am trying to add @superset-ui/legacy-plugin-chart-sankey-loop\n<https://www.npmjs.com/package/@superset-ui/legacy-plugin-chart-sankey-loop>\n\ni am successfully able to start seeing Sankey Loop in chart list, but while creating the chart i don't see various sql drop down like metrices, filter, group by etc\ncould you please suggest if i am missing something in the integration