Yes and it should do,why would you want to give an intruder time to access your home (via door) whilst you are upstairs in the land of nod ?.
I take it that the part set function disables your chosen pirs upstairs,giving you the freedom to move around,and downstairs remain active.
Or have I been programming/partitioning alarm wrongly for all these years.
SD, you can put your ball away for this one.
e manno, May 2012