There might have been an old %release cookie in v19. This one was coming from an old version of dZSbot (since parts of ioBanana were based on it) and this one only showed the last directory in the announced path (ie. CD1 for a multi-cd release). This is what you probably get (and explain in 2.).
ioBanana v20 has changed this behaviour and behave like i said (and you explained in 1.)