Have you done this?
► Switching PLT/CPG MFD’s requires DCS client restart.
Display/Use CPG Co-Pilot-Gunner MFDs (Default):
AH64_LEFT_CPG_MFD = { x = 80, y = 1520, width = 480, height = 480 }
AH64_RIGHT_CPG_MFD = { x = 1360, y = 1520, width = 480, height = 480 }
Display/Use PLT Pilot MFDs:
-- AH64_LEFT_CPG_MFD = { x = 80, y = 1520, width = 480, height = 480 }
-- AH64_RIGHT_CPG_MFD = { x = 1360, y = 1520, width = 480, height = 480 }
I have two Profiles in the DCS-MonitorSettings - one for the CPG and one for the Pilot. You have to edit the C:\Users\YOURUSERNAME\Saved Games\DCS.openbeta\Config\MonitorSetup\H_AH64D_Multiseat_SwitchPit.lua. I have f.e. a H_AH64D_Gunner.lua and a H_AH64D_Pilot.lua and have to select one before I enter the seat.