To try this out, open a risk and hover just to the left of a field name to see the drag and drop handle:
When moving a field, look for the horizontal gray bar to ensure you're dropping it in the location you want to move it to:
This also works with the full page editor:
Also remember that you can hide unused fields in both the quick detail panel and full page editor with the Show Fields button:
Please give it a try and let us know what you think!