I'm not sure what kind of PowerFlash you
have, but my PSC01 (in mode 2) flashes the
lights with a sequence of repeated All-Off
and All-Lights-On commands. The first thing
that happens is all the modules, including
Appliance Modules, turn off.
If I specifically send the All-Lights-Off
command, it's true that Wall Switch modules
turn off but the only plug-n lamp modules
which turn off are the LM14A and a LampLinc
dimmer. The LM465 plug-in lamp modules and a
similar 1997-vintage Radio Shack Plug 'n
Power lamp module remain on.