nabla: Ah, so it is! I'd searched for an existing bug report, but obviously not well enough.
Have just started playing at DailyGammon (as "wetware" there, and also at NetGammon). Will check their multi-game .MAT output shortly, though I presume it's correct. Since I now play enough bg matches here that are worth analyzing afterward, I might try creating a small Windows executable to auto-reformat BK's .MAT output (no matter how long a match), to make it compliant.
(Cacher) Si vous voulez trouver un adversaire avec un niveau de jeu identique au vôtre, regardez la page des Classements du type de jeu que vous souhaitez et trouvez un joueur ayant un même BKR. (pauloaguia) (Montrer toutes les astuces)