Worked many times 3B9FR before October 2012, but as he states in his QRZ.COMpage, as F6FNU (his former manager) is SK he cannot no longer confirm QSOs b4 that date. So is it possible to mark in DX4Win those QSOs as 'invalid' instead to delete them from the file? Would appreciate your help. Thanks Luis, CT4NH -- *Luis Sutil Teixeira*