The list does not contain WNrs, neither any mention to D9 being a prototype. In any case, the number of operational D9s by Oct 44 was anecdotal.
About the 1900Hp boost, AFAIK was compatible with MW50, not just substituted by MW50.
By that time, 190A8s were already developing 1900Hp in WEP with C3 injection, but were clearly surpassed in substained climbrate at sealevel by D9 with a similar weight (9,7 m/s for A8 without WEP and 11,3 m/s for D9 without WEP). It seems to me that takeoff power switched from 1730Hp to 1900Hp. But even with 1900Hp and, lets suppose, better prop efficiency, it would not win clearly over a 1900Hp 190A8 (1.65 ata 2700 rpm) in climbrate at sealevel. The fact is that D9s outclimbed and outaccelerated A8s at will at any alt.