[Dx4win] cw contacts before 1975

[Steve K7AWB]

My DX4WIN is crediting me with a CW QSO for the USA on 80 meters that occurred before Jan 1, 1975, the start date for CW credit.  Those old QSOs only count for MIXED, not CW. 

How do I get a 1976 or later confirmed QSO or later into that slot?  I tried to remove the confirmations from the 1950's QSOs that are giving me credit by changing the QSL confirmation from Y to N, but that just  lies to the data base about my past QSOs and another pre-1975 pops up in that slot.  This is also happening to me with Mexico and Canada so If WE solve it for the USA, I can solve it for the other countries.

Thanks,

Steve Sala
K7AWB
DN17es
Nine Mile Falls, WA
425 grids confirmed-6 meters