It is not practical to reorganize tracks in a long playlist using mouse drag&drop because it takes too much time. Easier would be to cut and paste. But is there such menu entry or a keyboard shortcut? I do not see it and Ctrl+C/V does not seem to do anything.

My only idea is to manually edit playlist file (export, import).

I have been asked to use forums to request new account on a Wiki. So I am doing so.
(I have not found any contact link on this page)