max2012 frame buffer old style enable ?

i changed max 9 -> max2012
but there is problem

in frame buffer , region mode window move restrict problem

in max 9 , region mode rendering can move region window to winodw outside
in architect building rendering , that is useful

but in max2012 , i can't move region mode rectangle

so i have to change max2012 frame buffer to old frame buffer style

can you understand ?