Currently the user is forced to use drag and drop to move nodes around in the iterations strategy editor. This is very difficult, in particular for moving things "to the right" (ie. to become a child of the node above).
There's a conceptual start for an "Up" button already in there that works for some cases. This should simply be finished and then completed for left/right/down which should be very similar. The only tricky bit is to cover all the edge cases.. for instance "node above is sibling", "node above is father" and "node above is ascendant of sibling" and get some logical behaviour about what the user would expect to happen when "Moving up".