[mkgmap-dev] no_u_turn

When the turn restrictions were added was the no_u_turn restriction implemented as I have recently been told by my 605 to make a U turn where I have specifically added a no_u_turn restriction? I feel it's only fair to mention that some of these no_u_turn restrictions are flagged as invalid by JOSM but that is because it (wrongly in my opinion) seems to take the direction of the via way into account. Cheers Paul