I'm trying to make an overview using the wiki's tut (http://developer.valvesoftware.com/wiki/Overview#No_red_line.3F) but it's only showing a small portion of the map in the cl_leveloverview view. It seems to be only showing the bottom level of the buildings (the one on the left and the middle one both have top floors) and cutting it off at areaportals (marked in red).
I remember reading somewhere that the leveloverview function attempts to cut off rooves so you can see inside, it seems this is what is happening, but as my map is on one big slope it has decided to cut all that off to. Is there a command or something to stop this?

Ah ok forget it, I figured it out: I just flew out of the map so the whole level was visible before going to cl_leveloverview.

yep that got me the first time i made a minimap too