I have thought about this sometime but not said anything, but is it on purpose that it is not possible to resolve a directional reservations (the blue reservation) with the resolver tool? I think it would be quite handy to be able to do that. It is not always clear what train is causing the directional reservation, and sometimes there are no "real" reservation to resolve that would take the blue away.
Also, when you properly resolve a reservation, all other visible reservations gets invinsible until you hit "b" again.
I think that I responded to this on another, related thread by mistake. I have fixed the issue where the clear reservation tool did not work for directional reservations. The actual behaviour of the tool other than this is inherited from Standard so far as I know and I assume is intended.