A new version of the ISAF Standard Damage Policy for Match Racing appeared today on the web site. I've done a comparison between the previous version and this one and the only change - apart from a couple of typos - is the place from where to deduct the half points.
They now always are deducted from the skipper’s total round robin score, not from individual match scores. It avoids having to award negative points for the loser of a match. Instead it always deducts points for causing damage from the total score.
Something the scorer will appreciate, but not something that effects racing or policy.