Isn't KCI an exception to ABO enforcement?
Come to think of it, isn't KCI an exception to "No penalty causes loss of the ball"?
KCI is an exception to ABO -- pretty much anything specified in 10-5-1 as having special enforcement provisions. (Also Football Fundamental X.3)
It's not a violation of Fundamental I.6, however, if we split some hairs about some definitions that are the reasoning behind PSK and the like. If Team K legally kicks the ball and it travels beyond the neutral zone, they have willingly surrendered the ball to Team R. Therefore, it is not inappropriate to state that any foul during the scrimmage or free kick (like KCI) happened when R was in possession and enforced as such. Secondly, the foul *itself* did not cause the change of possession -- the possession change happened because of the legal kick. There was simply a foul that occurred during the otherwise legal change of possession.
Yes, *by rule*, R is not in team possession until R recovers the ball (or the ball becomes dead by rule), but by philosophy, K has relinquished team possession during the legal kick, so the ball is in some undefined state during the kick.