Refreshing data fields in existing tree doesn't update Tips

[dopacki]

Updating data in an existing TreeMap, using loadJSON, correctly changes colors and shapes within the map, but doesn't automatically update Tips (tips continue to render, using old node.data).

[philogb]

Coud you try to set tm.tree = null before calling loadJSON?

 tm.tree = null;
 tm.loadJSON(json);